Mathematics Questions and Answers December 13, 2020

Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line. (The pair of variables have a significant correlation.) Then use the regression equation to predict the value of y for each of the given x-values, if meaningful. The number of hours 6 students spent for a test and

1) An experiment results in one of the following sample points: E1, E2, Es, or E4, Find P(E4) for each of the following cases. [15 Points]~ a. P(E1) = .1, P(E2) = .2, and P(E3) = .3- b. P(E1) = P(E2) = P(E;) = P(E4)~ c. P(E1) = P(E2) = .1 and P(E3) = P(E4)~ 2) Compute the number of ways you can select n elements from N elements for each of the

need help kn this probability and statistic question with steps with 4 decimal place, thank you so much hhhhhh Question 2120 marks! TOEFL is a wellknown test of English capability. The score of it ranges from O 120. The TOEFL organization states that candidates' scores are normally distributed with mean 74 points and variance 80. ABC is a local

Please use the following information to answer questions 21-25: Recent research suggests that children with ADHD tend to watch more TV than children who are not diagnosed with the disorder. To examine this relationship, a researcher obtains a random sample of n = 36 children aged 8-12 yrs old who have been diagnosed with ADHD. Each child is asked

2.27. An article in Solid State Technoiogy. \"Orthogonal Design for Process Optimization and Its Application to Plasma Etching\" by G. 2. Yin and D. W. Jillie (May 1987) describes an experiment to determine the effect of the QR; flow rate on the uniformity of the etch on a silicon wafer used in integrated circuit manufacturing; All of the runs

Should I use the Full Model or Reduced model? And why? SUMMARY OUTPUT $50,000 (in USD millions) -312.6507858 196.8279035 -1.588447472 0.118617684 -708.1912666 82.88969501 -708.1912666 82.88969501 Price to Earnings>15 585.0629055 173.6595672 3.369022018 0.001476981 236.0809396 934.0448715 236.0809396 934.0448715SUMMARY OUTPUT

Please set up a Markov Chain: 3. Compartments] Random Particle Movement Model (35 total points) In a physics experiment a particle is placed in Chamber A of the space shown below. The scientists observe the length of time for the particle to rst enter the special chamber, ghamber F, where time is measured by the number of chambers the particle

In apoll, 303 of 1010 randomly selected adults aged 18 or older stated that they believe there is too little spending on national defense. Use the technology of your choice to find a 95% confidence interval for the proportion of adults aged 18 or older who believe there is too little spending on national defense. Construct a 95% confidence

SUBMIT - MA X A ALEKS - Ashle X Pf iCampus Log X BB ALEKS- MAT X A ALEKS - Ashle x X Mathway | Al x Ya Questions on x + thway.com/Algebra = Algebra Mathway OC Chegg service Suppose that 50% of the women who gave birth at a certain hospital last year were over 30 years old, and that 43% were unmarried. If 19% of the women were both unmarried and 30

@ Quizzes - MATH302 BOOS Fall 20. x * week 3 test.docx * + X https://myclassroom.apus.edu/d21/Ims/quizzing/user/attempt/quiz_start_frame_auto.d21?ou=44150&isprv=&drc=0&qi=104463&cfql=0&dnb=0&fromQB=0 ... Week 3 Test X Time Limit: 2:30:00 Time Left:2:26:08 Nathaniel Taylor: Attempt 1 Page 1: Approximately 10% of all people are left-handed. Out of a

Help ! With explanation if possible. This stuff turns my brain into knots. The distribution of 1Q (Intelligence Quotient) is approximately normal in shape with a mean of Type numbers in the boxes. 100 and a standard deviation of 14- to points According to the standard deviation rule, % of people have an IQ between 86 and 114. Do not round

A national Australian banking corporation offering services both online and through traditional branches is interested in the extent that its customers are satisfied with its services. Management accordingly hires a research firm to estimate the proportion of its Australian customers that are satisfied with the bank's services. The research firm

Victor Anderson, the owner of Anderson Belts Inc., is studying absenteeism among his employees. His workforce is small, consisting of only five employees. For the last three years, he recorded the following number of employee absences, in days, for each quarter: Quarter Year I II III IV 2012 3 10 8 2 2013 5 13 9 4 2014 7 15 12 4 Determine a

PLS SOLVE IT The length for loaves of rye bread distributed to local stores by a certain bakery is manually distributed. Table Q2 below shows the length 01'3\" loaves ofrye bread recorded in centimeters. Table Q2 Length offal) loaves ofrye bread recorded in centimeters 34.713 36.361 33.668 33.6?1 34.?3? 35.99? 34.616 35.342 34.064 (a) What is the

We are conducting an experiment with a 2x2 factorial design to investigate the effects of soil type (fertilizer vs no fertilizer) and plant breed (heirloom vs non-heirloom) on plant height. In our analyses, we calculate the main effects of fertilizer and plant breed on height. We also calculate the interaction of fertilizer and plant breed on

For each function, find: a) All critical numbers. b) Regions where the function is increasing. (Use interval notation.) c) Regions where the function is decreasing. (Use interval notation.) d) Evaluate the function at each critical number. e) Classify each critical point as a relative minimum, a relative maximum, or neither. Sample wording for

Hypothesis Testing is the use of statistics to determine the probability that a given claim is true. In Part II of this project, you will choose a data set, review claims and perform hypothesis testing and make a decision. You will then complete a write-up that includes the calculations. The government logs the number of documented births, deaths,

For the following problem, you will need formulas for binomial experiments. n = the number of independent trials x = the number of successes in n trials 5 = success F = fail p = P(S) = probability of success in one trial q = 1 -p = PlF) P(x) = probability of x successes in n trials. The binomial probabilities are computed with the formula below.

Put a comments in those two post, the Professor asked us to comments to our classroom post on blackboard 1 I used the Random Number Generator in Excel to create 100 random numbers. It was found that the average of the 100 numbers was 7.5. This means that he will need to see on average 7.5 customers a day to cover their expenses. I created a

According to a Gallup survey two years ago, 32% of American households use a computer or online financial program to manage their money. Suppose analysts believe that this figure has increased recently, and they test their theory by randomly sampling94American households. Of the94households,36% respond that they do use a computer or online

35. Gummy bears Courtney and Lexi wondered if the distribution of color was the pg same for name-brand gummy bears (Haribo Gold) and store-brand gummy bears 790 (Great Value). To investigate, they randomly selected 6 bags of each type and counted the number of gummy bears of each color. "Here are the data: 15 Brand Name Store Total Red 137 212 349

CURRENT OBJECTIVE Determine whether a study is observational or an experiment and appropriate use cases Question In a study to add a new feature to a software program, the programmer introduced two categories, men and women, in the survey she conducted. Is the study observational or experimental?If it is an experiment, what is the controlled

Score: 5.4/ 11 5/7 answered Question 7

Question 7 Past studies have indicated that the percentage of smokers is estimated to be about 35. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. a) If you going to test this claim at the 0.05 significance level, what would be your null and alternative hypotheses b)

help please Finish times (to the nearest hour) for 59 dogsled teams are shown below. Draw a histogram. Use five classes. 261 274 236 244 279 296 284 297 288 288 247 256 338 360 341 333 261 269 287 296 313 311 308 308 299 303 277 283 304 305 289 290 289 290 297 299 332 330 309 329 308 329 285 291 295 298 306 315 310 318 318 320 333 321 323 324 327

Hi pls help me with the question thanks, (h) The Prime Minister had advised all Malaysians to stay at home to break the chain of the COVE-19 infection. A survey was conducted on 150 people who are living in a small rural area on their opinions on the most effective way to minimise the risk of exposure to the COVID-lg' virus. Table 2.1 shows the

probability discussion give two examples Topic Probability is used constantly in our lives. We rarely actually use numbers in our daily calculations but probability still controls much of our daily interactions. Some examples: 1. My wife is always late. I would estimate that she is late perhaps 95% of the time. Based on this, I can plan events.

1. (NEWS) 0, 8, and 9 should be defined as "missingZUZU-US- 22 a What does the variable NEWS measure (hint: variable label)? b. What is the variable's level of measurement? C List one type of chan appropriatethompson@ridereda d Produce the chart listed in response to Question I[c) above, and then, based on your output, fill in the blanks below.

Please help?? 1 Check my work urrently Samsung ships 23.4 percent of the organic light-emitting diode (OLED) displays in the world. Let S be the event that a andomly selected OLED display was made by Samsung. a) Find P(S). (Round your answer to 3 decimal places.) P ( S ) (b) Find P(S'). (Round your answer to 3 decimal places.) P ( S ) (c) Find

The cost (in Rands) of 30 grocery items is given below. 34.85 29.60 46.20 82.99 78.30 44.10 35.20 42.50 58.40 53.00 45.50 53.20 19.35 33.20 57.30 55.40 43.99 31.60 16.75 58.25 59.60 18.00 45.10 47.45 31.99 15.10 42.40 44.70 36.80 18.20 1.1. Using 5 classes of equal width, construct a grouped frequency distribution of the above data. Let R 10.00 be

Markov chain transition Problem 3. Consider the Markov chain shown in Figure 2. Figure 2: Problem 3 Markov chain 1. Let the initial distribution be Pr(A) : Pr(B) = 0.5. What is the probability distribution after one step? 2. What is the stationary distribution of the Markov chain? Different people view things and outcomes differently. This is

O The charge qenc must be all the charge lying within the Gaussian surface. O If the net flux through a Gaussian surface is zero it is certain there are no charges enclosed within the Gaussian surface. O The electric field E in the integral is due only to the charge qenc O Gauss' Law calculates the electric field only at the location of the

5. Consider n pairs of numbers (X1, Y1), (X2, Yz), ..., and (X,, yn). The mean and standard deviation of the x-values are x =5 and sy = 4, respectively. The mean and standard deviation of the y-values are y = 10 and sy = 10 respectively. Of the following, which could be the least squares regression line? A. y = -5.0 + 3.0x B. V = 3.0x C. y = 5.0 +

GEEKSOVO v-awu.aleks.com/alekscgi/x/Isl.exe/10_u-IgNslkasNW8D8A9PVVf0eU6MG8FFOW-3iCxJLnpPFQGg... @ 16 G Test 3 Question 7 of 25 (1 point) | Question Attempt: 1 of 1 Time Remaining: 3:27:12 . Sierra V 2 3 5 6 8 9 10 11 12 13 Espanol Sixteen percent of the world's population is left-handed. A researcher claims that left handed individuals are more

hhi ineed help 4. (10 points) A parking garage at UNM has installed an automatic gate. Unfortunately, the drivers have a probability of p of crashing into the gate, in which case it needs to be replaced. Also, if the gate has survived m days without a crash, it still must be replaced because of wear-andtear. What is the long-term expected

The distribution of IQ scores among adults follows a normal distribution with a mean of 100 and a standard deviation of 15. Continuing the above example, what is the probability that a randomly selected adult has an IQ score lower than 35 OR greater than 115? Instead of using JASF, consider howr your answer to the previous question can be used to

solve both questions hand written and show work 1. We roll two fair 6-sided dice. Let A be the event \"the sum of the points is 7\2. A random variable has the following probability mass function X 2 4 6 p( X = x) 0.1 0.3 0.4 0.2 (a) What is the expected value of X? (10 points) (b) Draw the CDF curve of X (10 points)

SCENARIO: A researcher believes exercise may affect anxiety in women, but research appears inconclusive. She identifies a group of women (N = 30) who had not exercised before, but are now planning to begin exercising. She gives them a 50-item anxiety inventory before they begin exercising and administers it again after 6 months of exercising. The

The data in the accompanying table give the diameter(in thousandths of aninch) of motor shafts that will be used in automobile engines. Each day for 6weekdays, 4 shafts were sampled from the production line and carefully measured. For these shafts to workproperly, the diameter must be about 815 thousandths of an inch. Engineers designed a process

An experiment was carried out to study the effect of various amounts of fly ash on the strength of concrete. A sample of 15 specimens of 28-day old 4,000 psi-specified-strength concrete using 0% to 60% fly ash is obtained. Flyash% Strength 4779 4706 4350 20 5189 20 5140 20 4976 30 5110 30 5685 30 5618 F 40 5995 40 5628 40 5897 50 5746 50 5719 50

Quiz i Saved Help Save & Exit Submit If you are trying to build credit by using a credit card, each time you make a purchase with the credit card, deduct that amount from your checking account. That way, when your credit card bill is due, you will have enough to pay the credit card off in full. Kathy Lehner is going to start doing this. She plans

answer this Question 30 The Pearson product moment correlation coefficient is a value ranging from -1 0 to 1.0 O True O FalseQuestion 29 In normal probability distribution, P(X = x) is always equal to P(X

Help me please with complete solution thank you Solve the systems of nonlinear equations and graph them on a graphing paper. Show complete solutions and box your final answer for their intersections. 5 points each x2 - y = -2 2) x2 + y= 1 -x+y=4 2x + y = 2 3) x2+ y =-5 4 x2 + y? = 1 -x+y=3 X- y=-1 5) The parabola y = x2 - 6x + 11 and the line y =

Show work please. Evaluate the integral. (Use symbolic notation and fractions where needed. Use C for the arbitrary constant. Absorb into C as much as possible.) 13;:2 + 19x + 4 (x l)(x +1)2 ( Question 4 of 7 > Evaluate the integral. / dx (x 5)(x 4X16 + 6) (Use symbolic notation and fractions where needed. Use C for the arbitrary constant.) / dx _

What are the chances your flight will leave on time? To the right are a histogram and summary statistics for the percentage of flights departing on time each month from 2001 thru 2006. There is no evidence of a trend over time. Complete parts (a) through (c) below. 203 80.4444 15 # of Months 105 2.69753 65 80 OT Departure % Is the independence

GIVE TYPED WRITING SO I CAN UNDERSTAND CLEARLY. Kindly give correct answers and step by step working.do not skip steps.Mention clearly about the formula and the conversion.be very clear.do not skip steps.be very clear.NUMBER THE Ans CLEARLY. QMT110 MARCH 2012 QUESTION 1 The following data shows the total marks obtained by students in the QMT

3 STAT Homework Questions 1. Many colleges and universities charge more tuition for students who are in professional programs, such as Nursing, Engineering, Law, and Business. To measure support for differential tuition fees, a student asked a question in the two ways shown below. Complete parts a through c. 1. With persuasion: "Students in

The standard deviation. the'range, and the interquartile range (lQR) summarize the variability of the data. a. Why is the standard deviation usually preferred over the ranges? b. Why is the IQR sometimes preferred to the standard deviation? c. What is an advantage of the standard deviation over the lQR? a. Why is the standard deviation usually

Consider the following set of dependent and independent variables. Use this data to complete parts a and b below. 10 11 16 17 18 20 2 22 25 X1 1 6 6 11 7 10 16 21 Critical t-scores X2 15 g 11 0 6 5 1 Tail 0.200 0.100 0.050 0.025 0.010 0.005 Click the icon to view a partial table of critical t-scores. 2 Tail 0.400 0.200 0.100 0.050 0.020 0.010 Conf

You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 64% at a level of significance of = 0.10. According to your sample, 51 out of 74 potential voters prefer the Democratic candidate. For this study, we should use Select an answer (z-test for a population proportion,

On a nationally standardized reading comprehension test, the norm for the population mean was designed to yield a scaled score value of 50 for the population of fifth-grade students. A random sample of 10 elementary school children was tested, yielding scores of 48, 42, 55, 35, 50, 47, 45, 45, 39, and 42. Estimate whether this sample might be

QUESTION 1 Qualitative research is useful when when we need precise statistics to describe a research population we don't yet know enough about a topic to form a hypothesis that can be tested quantitatively we have a predefined hypothesis about what we will find we cannot collect a large enough sample to perform an adequately powered quantitative

A.The concession stand at the baseball park gets (on average) 20 customers per inning.The cashier can process 30 customers per inning (on average).The concession manager does not understand how they can have any line at all when they are able to process the customers much faster than they arrive.Can you help explain to the manager the

Question 10 b-e please 10. Box plots of the heights (in inches) for a sample of college students are shown below. TX (2 points each) female n-32 male n=48 60 62 64 66 68 70 72 74 HEIGHT A) What is the height of the shortest female student? The height of the shortest female student is 64 inches B) How many males are shorter than 68 inches tall? C)

The age when smokers first start from previous studies is normally distributed with a mean of 13 years old with a population standard deviationof 1.7 years old. A survey of smokers of this generation was done to estimate if the mean age has changed. Thesample of 23 smokers found that their mean starting age was 14.3 years old. Find the 99%

You wish to determine the GPA of students at your school. Select the correct sequence of process steps you would go through to collect a sample if you use a stratified sample: Obtain a list of all students at the school from the registrar's office. Separate the students into different groups by major. Use a random number generator to randomly

Box-Cox transformation The accompanying observations are precipitation values during March over a 30-year period in College Station. 77 1.20 1.74 .47 .81 1.43 1.20 3.37 1.95 2.20 3.00 1.62 3.09 1.31 1.51 .32 2.10 .59 .52 .81 2.81 2.48 1.87 .96 1.18 1.89 1.35 .90 4.75 2.05 The data is given in rain . csv. a. Construct and interpret a normal QQ plot

please address all the questions. Thank you A poll was conducted with respect to a future referendum, where voters will answer either "yes" or "no" to a question on a political issue. A random sample of 1,106 eligible voters were asked in the poll and 603 of them answered "no". Letp denote the true population proportion of "no" voters. We wish to

A researcher examined gross job gains and losses as a percentage of the average of previous and current employment figures. A simple random sample of 20 quarters provided the net percentage gains?(losses are negative?gains) for jobs as shown in the accompanying table. Complete parts?(a) through?(d) below. a. Decide?whether, on?average, the net

The Research hypothesis would be?What type of variable is sodium (ml)?What level of measurement is sodium (ml)?The null hypothesis would be?The alternate hypothesis would be?The value for the statistic is?The p-value is?Will we reject the null hypothesis ?The proportion of variability in blood pressure that we can explain with sodium intake is?The

Use the budget below to answer the following question: What percentage of the budgeted salary is the budgeted tax? Description Budgeted Actual Salary 3600 3600 Mortgage/Rent 1080 1080 Car Payment budget table 300 300 Credit Card Payments 300 250 Student Loans 300 300 Utility 250 220 Gas - Car 100 125 Food 200 230 Supplies 100 50 Tax 360 360

The records of a casualty Insurance company show that, in the past, its clients have had a mean of 1.8 auto accidents per day with a standard deviation of 0.05, The actuaries of the company claim that the standard deviation of the number of accidents per day is no longer equal to 0.05. Suppose that we want to carry out a hypothesis test to see if

Dr.King decided to put up a medical clinic .below are the transaction of month of july Dr. King decided to put up a medical clinic. Below are the transactions for the month of July. Required: 1. Journalize the transactions. 2. Prepare the T-accounts. 3. Prepare the trial balance. July 4 King invested cash of P1, 000, 000 July 5 Bought office

Problem statement: It is not known if and to what extent pre-college outreach programs affect financial aid attainment, academic achievement and persistence of rural California community college students. Research questions: Are pre-college program participants securing financial aid at a higher rate than first year students who do not participate

Hey please help me finish this thanks :) Section 8 Thermal Flow (6 Marks) Question 16 A Bridge is 2650m long @ 20 C. The coldest day recorded was -4.0C and the hottest day was 45.3.C, which means the road base was at 61 C. Assume a = 1.2 x 10-5. AL = LoaAT Where:- AL = Change in length m ) Lo = Original length ( m ) a = Coeficent of linear

Throughout (X , ,0) will denote a metric space. R denotes the set of real numbers. For a metric space X, C(X) will denote the normed vector space consisting of the bounded continuous functions f : X a R with the supremum norm, Hf\" : supmex |f(z)l. Let h : [a, b] - R be continuous, and let K : [a, b] x [a, b] - R be continuous and suppose that M

The following are hypothetical data on the number of doctors per 10,000 inhabitants and the rate of prematurely delivered newborns for different countries of the world. Table 3: Number of Doctors Verses the Rate of Prematurely Delivered Newborns CountryDoctors per 100,000Early births per 100,000

To get a better understanding, please show how you worked out this problem. Thank you. California and New York lead the list of average teachers' salaries. Random samples of 33 teachers from each state were selected in 2019-20 and the following data are obtained. At o =0.10 is there a difference in means of the salaries? California New York Sample

Cincinnati Paint Company sells quality brands of paints through tool shops all through the United States. The organization keeps a huge deals power who approach existing clients and search for new business. The public team lead is researching the connection between the quantity of deals calls made and the miles driven by the salesperson. Likewise,

Thank you In a recent year the scores for the reading portion of a test were normally distributed with a mean of 20.5 and a standard deviation of 6.3. Find the probability that a randomly selected high school student who took the reading portion of the test has a score that is between 16.5 and 24.5 Do Homework - Week #4 Textbook Homework - Mozilla

For this homework assignment, please attach all of your output from SPSS to the end of the document. You can copy and paste the important tables on the last page. All of the SPSS problems for this week use the GSS2016. Write all hypotheses in both sentence (i.e. "there is no difference...") and statistical notation (i.e. " 1 = 2 ") format. 8. For

statistical questions Consider an i.i.d. sample X1, ..., X, from the continuous probability distribution D(#) with density function f(x) = ce(x-M)> p- 1Exsp+1, where # E (-co, co) is an unknown parameter. Throughout this question, c denotes the fixed constant c= edx) =0.341845. (a) In the special case where # = 0, explain why EX, = 0. Hence or

Please help me solve these !! I just need to know which option it is please help me asap!! thank you!! Screen Shot 2021-04-11 at 10.18.34 AM Screen Shot 2021-04-11 at 10.18.42 AM Q Search Q Search Question 4 2.5 pts Question 5 2.5 pts The SPSS output below corresponds to a One-Way ANOVA (there are two questions that use this When attempting to

1. Which of the following statements is incorrect? The median is the most appropriate measure of central tendency for highly-skewed data distributions. The variance is always greater than the standard deviation. O A 10% trimmed mean of a given data is solved by removing the largest 1046 and smallest 10% of the data, then computing for the mean.

6.(22 points) Heights in inches for American males aged 20 and over are approximately normally distributed (symmetric) with the mean height 69.3 inches and std deviation 2.99 inches. a.What percentage of American males in the above age group who are 6 feet or taller?(4 points) b.Find the 99th percentile of the American males in the above age group

A management consultant was interested in whether workers who telecommute are as productive as those who work in the office. She randomly selected 60 workers who were in each of the following three groups: (1) full-time office workers, (2) part-time telecommuters, (3) full time telecommuters. After analyzing the data, the consultant noticed that

Confidence intervals for z-score: y z 0.975 n S n 1 , for t-score: y t n 1 , 0.975 n S n 1 . For z-score ( z 0.975 ) and t-score ( t n 1 , 0.975 ), which confidence intervals have higher coverage probability for low sample sizes? Why? (DO NOT USE CALCULATION)

Part: 1 / 2 Part 2 of 2 (b) Find the area under the standard normal curve to the right of = = -2.36. The area to the right of = = -2.36 is X 5(b) Find the area under the standard normal curve that lies between 2 : 1.98 and z : 1.28. The area between 2: l.98 and z: l.28 is E]. (b) Find the area under the standard normal curve to me left of: : 2.l3.

Question 1: Since an instant replay system for tennis was introduced at a major tournament, men challenged 1391 referee calls, with the result that 424 of the calls were overturned. Women challenged 747 referee calls, and 222 of the calls were overturned. Use a 0.01 significance level to test the claim that men and women have equal success in

The amount of money (In $) spent weekly on beverages (both alcoholic and non-alcoholic) by a random sample of 80 college students is shown below. Dollar Amount Frequency 0 - 4.99 5- 9.99 10 - 14.99 12 15 - 19.99 20 20 - 24.99 24 25 - 29.99 What percentage of students spends at least $10 per week on beverages? 80% 10% 35% O 8% 54 1.5 points Is this

Decide whether the experiment is a binomial experiment. If it is not, explain why. Testing a cough suppressant using 980 people to determine if it is effective. The random variable represents the number of people who find the cough suppressant to be effective. The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4

A transportation manager claims that over 86% of train travelers buy their tickets before boarding the train. Only a small number of people on the train will be checked on the train to see whether they bought a ticket before boarding. Suppose that information about a random sample of 504 train travelers was collected and 57 of them did not

2. In order to examine the differences in ages of teachers among five school districts, a researcher selected five random samples of six teachers' ages in each district. The data collected by the researcher are presented in the table below. Apply one - way ANOVA to decide whether there are differences in teachers' ages among five school districts.

Q2 Smart Survey Company conducted a survey on the heights of Hong Kong secondary students. A sample of 100 students are selected, and their heights in m are recorded and grouped as follows: Heights (m) Frequency 1.1 - 1.2 1 1.3- 1.4 31 1.5-1.6 39 1.7- 1.8 27 1.9 - 2.0 2 Find the Mean, Median, and Mode of the dataset. (8 marks)

Scenario 1 (z-Test) According to physician data gathered across the greater Columbus metropolitan area, the average height of 17-year-old girls in the Columbus area is 67 inches, with a standard deviation of 3.19 inches. A high school principle believes the female students in her school are especially tall this year. The teacher records the

please explain and send correct solution according to question so i can do helpful Evaluating Test Items Items 3 show test items were part of midterm examination of an introductory psychology course. For each item calculate the difficulty and discrimination of the item. Then evaluate and discuss the quality of the item, and what, if anything

Assignment Jesse and Amir were assigned the same book to read. Jesse started reading on Saturday, and he is reading thirty-pages a day. Amir didn't start until Sunday, but he is reading thirty-five pages a day. How many days will it take Amir to catch up to Jesse, and how many pages will they each have read? Answer the questions to solve this

Book name: basic queueing theory dr. jnos strike subject name: Performance Evaluation of Info communication Networks solve this question using basic queueing theory systems 13. l [Bathroom Queue] It is well known that women spend twice as long in the restroom on average as men.3 That said. the waiting time. Tq. in the women's line seems much

A survey showed that 31% of human resource professionals are at companies that rejected job candidates because of information found on their social media. If 25 human resource professionals are randomlyselected, would 14 be a significantly high number to be at companies that rejected job candidates because of information found on their

Probability Theory 2 Conditional Distribution of Stochastic Independence Let X and Y have the joint pmf defined by f(x, y) = cxy where x = 1,2 and y = 2,3 a. Solve for c. b. Show the joint PMF in tabular form. c. Show the marginal PMF of X and Y. d. Show the joint CDF of X and Y. e. Show the marginal CDF of X using indicator function. f. Solve for

The sample standard deviations and sample sizes are given for independent simple random samples from two populations. Use the two-standard-deviations F-test to conduct the required hypothesis test. Two real estate companies, Century 21 and RE/MAX, compete with one another in a local market. The manager of the Century 21 office would like to test

Thank you! 10)Consider the game of spinning the equal segment spinner to the right. If you spin number 1, you lose 2 points. If you spin number 2, you win 24 points. If you spin number 3, you lose 4 points. If you spin number 4, you win 12 points. If you spin number 5, you lose 10 points. What is the expected value of this game? [2 marks] 5 1 5 4

Hi, I am in difficulty when I kept trying to do these questions. Could you give me a help to solve these questions? Thank you so much. Q1: Consider the permutation group 37. (a) Can the product of two cycles of length 4 be a cycle of length 6? (b) Can the product of two cycles of length 4 be a cycle of length 7'? Q2: What fraction of the

A B2B marketing Insider blog of October 7, 2010 examined five currently-used sales closing techniques. Sales scenarios are presented to a sample of 230purchasing executives. Each subject received one of the five closing techniques or a scenario in which no sales close was achieved. After reading the sales scenario, each executive was asked to rate

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 4 days and a standard deviation of 1.5 days. Let X be the recovery time for a randomly selected patient. Round all answers to 4 decimal places. a. What is the distribution of X? X ~ N(,) b. What is the median recovery time? days c. What is the

Help ASAP The weights of newborn for hippopotami is approximately Normal, with a mean of 85 pounds and a standard deviation of 10 pounds. a. What is the probability that a newborn hippo weighs between 92 and 110 pounds? b. Suppose baby hippos that weigh at the 6th percentile or less at birth are unlikely to survive. What weight corresponds with

Let {Xijt- be a sequence of independent. exponentials with expectation If A. Fix 51 large. Let s; = [1 otherwise {1 we}? {a} {3 pt] Find the exact distribution of Yn = n 31-. i=1 {b} {7' pt] Find an approz-dmate value for the probability 1P1}; 5 1n}. Justify your answer [which approximation did you use]. 1You should NOT use the exact distribution

A machine that manufactures automobile pistons is estimated to produce a defective piston 3% of the time. Suppose that this estimate is correct and that a random sample of 80 pistons produced by this machine is taken. Answer the following. (If necessary, consult a list of formulas.) (a) Estimate the number of pistons in the sample that are

Take a Test - Staline luaka - Google Chrome mathxl.com/Student/PlayerTest.aspx?testid=233001859¢erwin=yes MAT152-N844 FA21 Staline luaka 10/06/21 1:16 AM = Quiz: Quiz - Chapter 6 Question 5 This Quiz: 9 pts possible Submit Quiz Twelve jurors are randomly selected from a population of 4 million residents. Of these 4 million residents, it is

Visualization and Summary statistics for the variable 'price' (1) Graph a histogram (choose auto for bins or bin width=81; The plot should include variables with their units and the title). (2) Calculating Mean, Median, Mode, Range, Variance, standard deviation and IQR. (3) Describing the histogram based on three dimensions we learned in the

A researcher wants to assess if anti-bullying interventions can increase attitudes against bullying in a random sample of 24 8thgrade students.She will assess a main effect of gender (male and female), a main effect of intervention (didactic & group) and an interaction effect between gender and intervention.This factorial ANOVA will allow her to