Mathematics Questions and Answers December 07, 2020

A fast food company wants to determine the average number of times that fast food users visit fast food restaurants per week. They have decided that their estimate needs to be accurate within 0.2 of a visit, and they want to be 98% sure. Previous research has shown that the = 0.9 visits. What is the required sample size?

A manufacturer knows that their items have a normally distributed lifespan, with a mean of 5.4 years, and standard deviation of 1.7 years. The 7% of items with the shortest lifespan will last less than how many years? Give your answer to one decimal place.

2.5 / 4 4. Write a system of equations for the graph below and show the solution using algebra. y = XI GI + CN m -4

Find the range of the sample provided below. 4.6 8.5 8.3 9 4.7 2. provide an exact answer

0 Question 12 v Find the mean of this probability distribution. Round your answer to one decimal place

O Question 12 o 1 2 3 0.15 0.15 0.05 0.65 Find the mean of this probability distribution. Round your answer to one decimal place. Submit Question

Suppose you are pricing healthcare for a group of people, which you have roughly divided into "high-risk" and "low-risk". You know the following information: 20% of the population is considered "high-risk". A "high-risk" person is 6 times as likely to visit the hospital as a "low-risk" person. Use Bayes' theorem to compute the conditional

The population variance of the data set provided below is 17. Find k. 1.3k 1.9k 2.2k 2.7k 3.2k Round your answer to two decimal places.

The number of words defined on pages randomly selected from a dictionary are given below. Find the range and standard deviation for the set of numbers. 48 34 53 53 44 63 42 59 64 43 range = _ words )type integer or a decimal)

Use the data in the following table, which lists survey results from high school drivers at least 16 years of age. Assume that subjects are randomly selected from those included in the table. Drove When Drinking Alcohol? Yes (Alcohol):Texted w/ Driving: 664 | No Texting: 117 No (Alcohol): Texted w/ Driving: 3013 | No Texting: 4626. If one of the

. points possible zy answered Question 14 3 pts ) 10 A normal distribution has a mean of 127 and a standard deviation of 4. Find the z-score for a data value of 142. Round to two decimal places Submit

2a. Provide a complete analysis and summary for this problem. Be sure to address neces- sary assumptions, to describe the process of comparison of the models, and to summarize your conclusions based on the model you selected. If you feel that additional SAS output is needed email me and I can help

somebody wants to take a 1000km trip by car. The car has a constant failure rate of 10 -4 per kilometer travelled. What is the probability that the destination is reached without the car breaking down?

At a large university, the mean amount spent by students for cellular phone service is $38.90 per month with a standard deviation of $3.64 per month. Consider a group of 44 randomly chosen university students. What is the probability that the mean amount of their monthly cell phone bills differs from the mean for the university by more than $1.00

7. Use the given graph to solve each problem. (a) x =6 (b) x $6 (c) x >6 (a) Choose the correct answer below. O A. (-20, - 6)0(6, 20) O B. {-6, 6} O C. (-6, 6) O D. [-6, 6] (b) Choose the correct answer below. O A ( -6, 6) O B. (-00, - 6)U(6, 00) O C. [-6, 6] OD. {-6, 6} (c) Choose the correct answer below. O A. [-6, 6] O B. {-6, 6) O C. (-6, 6)

Find the standard deviation of the data provided below using the formula. Treat the data as population data. 6 4 5 19 19 Check your answer using 1-var stats, but make sure you can find the answer without using this calculator function. Round your answer to 4 decimal places.

The probabilities are,0.2,0.4and0.4that a trailer truck will have noviolations,1violation,or2or more violations when it is given a safety inspection by statepolice.If10 trailer trucks areinspected,find the probability that3 will have noviolations,5will have1 violation,and2will have2or moreviolations.Round your answer to at least three

4) Which is more unusual? Why? a A 12-pack of soda with a mean volume of 12.2 .oz, - A 6-pack of soda with a mean volume of 12.2 .oz, or o A single soda with a volume of 12.2 .oz

A researcher wants to estimate the proportion of new businesses that go bankrupt in their first year of operation. A random sample of 100 new businesses is taken and 20 of these went bankrupt in their first year of operation. Compute the 95% confidence interval for the proportion of businesses that go bankrupt in their first year of operation.

Rose is sure that any significant differences in her reading intervention study will favor those children who were in her treatment condition. She therefore will not consider rejecting the null hypothesis that the groups are different in favor of her control condition. Rose will then

4. Create theoretical ROC curves assuming the following d' values (.5, 1, 1.5, 2. 2.5). Describe how the ROC curves change as d' gets larger.

Stats 119 Of 3&0 randomly selected medical students, 21 said that they planned to work in a rural community. Find a 95% confidence interval for the true proportion of all medical students who plan to work in a rural community. 0 A. 0.0251: pt-'l O B. 0.0350

In September of 2019General Motorswas negotiating with the United Auto Workers over a new contract.One area of contention is the share of health care costs employees pay.At that time employees paidabout 5% of total costs for health care and GMwasproposing increasing that to 15%.Given the following different assumptions as to the employee's price

Randomly driving marble from the bag of marbles I could in seven of my most to grandmas and one red marble what is the probability that the marble you draw is not a blue marble

The famous iris dataset (the first sheet of the spreadsheet linked above) was first published in 1936 by Ronald Fisher. The dataset contains 50 samples from 3 iris species: setosa, virginia, and versicolor. Four features are measured, all in cm: sepal length, sepal width, petal length, and petal width. What is the equation for the least square

In a soccer match, a tie at the end of two overtime periods leads to a "shootout" with five kicks taken by each team from the penalty mark. Each kick must be taken by a different player. How many ways can 5 players be selected from the 11 eligible players? For the 5 selected players, how many ways can they be designated as first, second, third,

A company recruiter claims that the average starting salary for a new employee at her company is more than$ 31700 $31700 . You test this claim by surveying 35 employees at the company and find their average starting salary to be$ 32334 $32334 . Assume that the population standard deviation is$ 1921 $1921 and the salaries are normally distributed.

Suppose that Y1, Y2, . . . , Yn is a random sample from a probability density function in the (one-parameter) exponential family so that f (y | ) = $ a()b(y)e[c()d(y)], a y b, 0, elsewhere, where a and b do not depend on . Show that n i=1 d(Yi ) is sufficient for .

grade 12 data management permutations unit hand written legible solutions preferred thanks!

3. Prove the following statement 1, 2) POI 4n 2

The Oxford Gift Shop averages four sales each hour. Betty is scheduled to work the cash register 1:00-3:00 on Saturday afternoon. What is the probability that betty rings up exactly ten customers?

U w Frequency N 2 4 data Q A survey asked how many children people have. The survey results are given in the histogram abo raw data (survey responses). Enter the data as a comma-separated list, for example: 1, 1,2,2,2,3

Here are several scatterplots. The calculated correlations are 0.951?, ?0.021?, 0.736?, and ?0.923. Which is?which? (a) (b) (c) (d)

(d)

By Increasing the confidence level, explain what effect this will have on the margin of error.

By Increasing the confidence level, explain what effect this will have on the margin of error. Answer

3) A fair die was rolled five times, then what are its sampling distributions of the sample means, sample variances, and standard deviations illustration?

a. Take 40 numbers randomly and find its i.P 75 , ii.Median, . b. Make a grouped frequency distribution of that data and again calculate its i.P 75 , ii.Median, . c. Compare your results of part(a) and part (b), also comment on your results.

The mean test score in Miss Smith's 4th grade English class was 64, with a standard deviation of 4. Assume the grades are normally distributed and use the Empirical Rule (68-95-99.7) to find the approximate percentage of students who scored above 68. O 50% O 84% O 16% O 2.35% O 2.5%

5 5. Given (x + , find and simplify the expression for the general term

5. Given x , find and simplify the expression for the general term.

3. Solve the following absolute value equation. x - 9 =6 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The solution set is (Simplify your answer. Use a comma to separate answers as needed.) O B. The solution set is { } or O

Y)Employment (X1)Job Sector (X2)Covid 19 (X3)Education (X4)Gender (X5)Se (Y) Employment 1.0 (X1) Job Sector 0.4 1.0 (X2) Covid 19 -0.1 0.0 1.0 (X3) Education 0.3 0.1 0.1 1.0 (X4) Gender 0.1 0.1 0.1 0.3 1.0 (X5) Seniority 0.2 0.2 0.1 0.5 0.4 1.0 Explain the hypothesis testing

QUESTION 1 The statistic commonly used to testfor association between non-numeric variables,egin contingency tables, is: A. F 2 B. t 2 C. z 2 D. Chi-square (X 2 ) QUESTION 2 The method used to find the "best"parameter estimates for a logistic regression model is: A. OLS B. Weighted Least Squares C. Maximum Likelihood D. Ridge Regression QUESTION 3

7. Use the Binomial Theorem to simplify the expansion of the following: a. (2x + y)S 2 4 b

7. 2 Use the Binomial Theorem to simplify the expansion Of the following a. (2x y) 5

The number of bicycles sold monthly by a bicycle dealer was as follows. 25 18 30 18 20 19 30 16 36 24 Calculate ; a) The mean b) Standard deviation. Upper Quartile Q1 Fi d) Lower Quartile Q3 Tir

3. For doctors, what is the ratio of males to females? Round your answer to two decimal places when appropriate. And interpret the ratio you compute. (3 points) 4. What is the ratio of male doctors to male lab technicians? Round your answer to two decimal places when appropriate. And interpret the ratio you compute. (3 points) 5. What percentage

Select a firstyear college student at random and ask how they would characterize their political views. Here are the probabilities, based on proportions from a large sample survey in 2016 of firstyearstudents: Political viewFar leftLiberalMiddle of the roadConservativeFar rightProbability0.04 0.040.31 0.310.43 0.430.20 0.200.02 0.02 What is the

You are researching a phenomenon in which certain events are less likely to occur (hint: rare). What is the most likely distribution you would assume characterizes these events? Why? How do you know? Furthermore, the results of your analysis are questioned and you decide to conduct further tests. Would the consideration of a hypergeometric

I need help with these 5 questions quickly, no explanation needed!!! Question 1 (1 point) Question 2 (1 point) If p = (7, 2) q = (5, -1), find p - q. Dap- q= (2, 1) Ob) p- q = (12,1) Ocp- q= (12, 3) Od p-q = (2, 3) The diagram above shows a vector that can be described as; O a) ( -2, 3) Question 4 (1 point) O b) (3, 1) If p = (7, 2), then find

Use the Standard Normal Distribution Table to find the area (probability) of the indicated shaded region Z1 = - 0.69 and Zz = 1.62 HHHH 0

Twenty swimmers are competing in the Olympics. Of the swimmers, 6 are from the United States, 4 are from Canada, 3 are from China, 4 are from Japan and 3 are from Russia. Suppose the scoring takes account of the countries that the swimmers represent, but not their individual identities. What is the probability that the United States has 3

U.S. airlines average about 11.8 fatalities per month ( Statistical Abstract of the United States ). What is the probability that no fatalities will occur during any given month? What is the probability that there will be more than 10 fatalities in a given month? How many months out of the year would you expect there to be more than 10 fatalities?

MGF 1106 Math SECTION 12.3 Measures of dispersion ZOLO1 12.0 Homework Score: 0 of 1 pt 4 of 11 (0 complete) D IW SC 12.3.9 Questio Find (a) the range and (b) the standard deviation of the set of data. 58, 31, 43, 40, 40, 49, 40 (a) The range is (Simplify your answer.)

The following is the recorded earthquakes on South Carolina from August, 2016 to February, 2017. Use the data to find the residuals.Please help me get correct answers for the plot with red x's

MGF 1106 Math SECTION 12.3 Measures of dispersion Homework: Section 12.3 Homework Score: 0 of 1 pt 6 of 11 (0 complete) IW Score: 0% 12.3.13 Question Help Find (a) the range and (b) the standard Value Frequency deviation for the sample OU AON (a) The range is (Round to one decimal place as needed.)

DETAILS MY NOTES ASK YOUR TEACHER A gas station sells three types of gas: Regular for $2.95 a gallon, Performance Plus for $3.15 a gallon, and Premium for $3.35 a gallon. On a particular day 5800 gallons of gas were sold for a total of $17,750. Three times as many gallons of Regular as Premium gas were sold. How many gallons of each type of gas

The number of tree species 5 in a given area A in the Fasah Forest Reserve in Malaysia has been modeled by the function: 591) = 0.882 AM\" and A is measured in square meters. What is the input variable of the formula? [This is the variable that would be the horizontal axis on a graph.) What are the units for STA)? Write an equation for 51100) and

Please help Q1-Q8 1. The graph below is the function f(a) 5 03 2 -5 -4 -3 -2 31 1 2 Find lim f(z) Find lim f (z) x- -1+ Find lim f (x) x- -1 Find f( - 1)\fEnter each answer as a whole number (like -4, 0, or 253) or DNE for undefined or Does Not Exist. 3:2 2.5a: 12.5 a: 5 is undefined at a: = 5. Complete the table and estimate the The function

I have some difficulty solving for the problem thank you in advance Points] DETAILS PREVIOUS ANSWERS BBBASICSTAT8 6.R.009. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER nsumer Banker Association released a report showing the lengths of automobile leases for new automobiles. The results are as follows. Lease Length in Months Percent of Leases 13-24

AutoSave . Off calculs - Compatibility... Search A Aditi Sinha AS X File Home Insert Draw Design Layout References Mailings Review View Help Share Comments Cut Find ~ LOT Calibri (Body) * 11 ~ A" A Aa* Ap AaBbCcDc AaBbCcD

I just need help with the class boundaries and the individuals. I did everything else identity the lower class limits. upper class limits. Blood Platelet Count of M class width. class mldpoints. and class Females [1000 oellmrL) Frequency D: boundaries tor the given frequency distribution. 100.199 25 Also identity the number of Individuals included

1) How can you determine if three points lie on the same line? Describe at least two ways. How can you determine if four points lie on the same plane? Explain your process in detail. 2) define the level curves of a function of two variables. Describe how level curves can help you sketch a graph of a surface. Give examples of several surfaces whose

answer each question 2.1 A Preview of Calculus OPEN ITEMS INFO LEARNING RESOURCES 16. Help me with this * 1 The displacement (in feet) of a certain particle moving in a straight line is given by y = 5. (A) Find the average velocity for the time period beginning when t = 1 and lasting (1) .01 s: (ii) .005 s: (iii).002 s: (iv) .001 s: NOTE: For the

please answer questions ,6 to 8 Roll on 2nd Die 2 3 5 6 (1, 1 ) (1, 2 ) (1, 3) (1, 4 ) (1, 5 ) (1, 2) 2 3 4 5 2 ( 2, 1 ) (2, 2) (2, 3) (2, 4) (2, 5) (216 3 5 8 (31 1 (3, 2) (3, 3 ) ( 3, 4) ( 3, 5) ( 3, 6) Roll on I die 4 5 7 Q (4, 1 ) (4,2) (4, 3) (4, 4 ) (4, 5 ) (4, 6) 5 8 9 5 ( 5 , 1) ( 5,2) ( 5, 3 ) (5, 9) (5, 5) ( 5, 6 ) 8 10 (6, 1 ) (6, 2) (

estion 8 of 16 Find the critical point(s) of the function f(x) = x +x 3 + 3. (Give your answer in the form of a comma-separated list of values. Express numbers in exact form. Use symbolic notation and fractions where needed. Enter DNE if the function has no critical points.) critical point(s): Determine the x-coordinates of the critical point(s)

An IT retailer "Jolly Roger" in Dalby offers products (desktop PCs, tablet PCS and individual components) and services to its customers. They have hired you to develop a class diagram. Customers can place orders. If an order is not paid for immediately, then an invoice is generated. Each order will have a list of product or service offers.

In a study of government financial aid for college students, it becomes necessary to estimate the percentage of full-time college students who earn a bachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a 0.02 margin of error and use a confidence level of 99%. Complete parts (a) through (c) below.

Hw 7 #20 part 1 & 2 Q # 20. (8 pt.) Body mass index (BMI) is equal to weight in kilograms divided by height in meters squared. A study by the National Center for Health Statistics suggested that women between the ages of 20 and 29 in the United States have a mean BMI of 26.8 with a standard deviation of 7.4. Let us assume that these BMIs are

A company retains a psychologist to assess whether job applicants are suited for assembly-line work. The psychologist classifies applicants as one of A (well suited), B (marginal), or C (not suited).The probability of being classified as A is 0.45 and the probability of B is 0.30.If someone is classified as A, the probability that s/he is hired is

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 OCT2010 QUESTION 1 Blies Corporation manufactures certain chemical processors. The following data

A psychologist wants to predict individual's scores on a depression survey using their scores on a locus of control test. What is your predictor (X) variable? What is your criterion (Y) variable? 2. After collecting data for both variables, the psychologist finds the following: COV xy : 7.33 Variance x : 20.33 Mean of X: 15.50 Mean of Y: 17.50 3.

Question 2 0 l 0 Pts An experiment subject only to random uctuation within a normal distribution collects the following set of unitless numerical values: 15.8, 17.8, 19.5, 20.0, 14.7,16.6,16.8,19.4, 18.3 A number of hypotheses are put forward for the theoretical value of what is measured here. Select all of the theoretical values given below that

i am stuck on these questions and do not know how to do it. ?}Approximatelv 5% of cellphones coming out of the production lines have a defect. Fifty cellphones are randomly selected from the production line. and tested for defects. [2 marks] What kind of probability distribution is this? What probability formula would you use to find the

An economist studying fuel costs suspected that the mean price of gasoline in her state was more than\$3 $3 dollar sign, 3 per gallon on a certain day. On that day, she sampled40 40 40 gas stations to testH_0: \mu=\$3 H 0 : =$3 H, start subscript, 0, end subscript, colon, mu, equals, dollar sign, 3 versusH_\text{a}: \mu>\$3 H a : >$3 H, start

A statistical program is recommended. The following observations are on stopping distance (ft) of a particular truck at 20 mph under specified experimental conditions. 32.1 30.8 31.1 30.4 31.0 31.9 The report states that under these conditions, the maximum allowable stopping distance is 30. A normal probability plot validates the assumption that

Consider the following situation. a two-tailed test at the=0.05 Find the appropriate rejection regions. (Round your answers to two decimal places. If the test is one-tailed, enter NONE for the unused region.) z > z < State your conclusion if the observed test statistic was z =2.17. If appropriate, provide a measure of reliability for your

Ex. 10,11 idililly households in the city. 10. Does (a) or (b) yield a more precise estimator of u? grow inspine (a) The sample mean of a sample of size n from a population with mean u and variance o 2 (b) The sample mean of a sample of size 3n from a population with mean u and variance 202 (c) How large would the sample in (b) have to be in order

The human resources manager in a large corporation that is encouraging its employees to g the COVID vaccine wants to estimate the percentage of employees who have had the vaccine of the present date. The probability that an employee has had a vaccine is p and the probabil that the employee has not had the vaccine is 1 p. (1) A random sample of 9

Translation :According to an economist at a financial company, average spending on "furniture and home appliances" was higher for households in the Montreal area than for households in the Quebec City region.A random sample of 18 households in each region is drawn and gives the following data, with regard to expenditure for this sector of economic

Please answer the following Markov Chain problem: 4. (30 total points): A player goes into a casino to gamble on roulette. Her objective is to have fun, not to make a lot of money, so she employs a simple strategy. She will get $50 in $10 chips (i.e., 5 chips), bet one chip at a time on either red or black according to her hunch at the time, and

These are my questions and please give detailed explanation. Thanks a lot ! 1. Suppose that a company wishes to examine the relationship of gender to job satisfaction, grouping job satisfaction into four categories: very satisfied, somewhat satisfied, somewhat dissatisfied and very dissatisfied. The company plans to ask the opinion of 100

Ly A Moving to another question will save this response. > Question 6 8 points Save Answer The township of Middleton sets the speed limit on its roads by conducting a traffic study and determining the speed (to the nearest 5 miles per hour) at which 80% of the drivers travel at or below. A study was done on Brown's Dock Road that indicated

Question 2 4 pts A marketing survey involves product recognition in New York and California. Of 203 New Yorkers surveyed, 50 knew the product while 77 out of 306 Californians knew the product. At the 1.5% significance level, use the critical value method to test the claim that the recognition rates are the same in both states. Enter the smallest

9 Question 17 (7 points) ) Listen 10 11 12 The average female Crossfit athlete weights 140 pounds with a standard deviation of 6.4 pounds. Assume that a Normal model can be applied. Using the curve below: label the Normal model for the athlete weights. Round to 2 decimal places where necessary. 13 14 15 16 17 18 19 20 21 22 23 24 A B C D E F G 25

Markov chain with State space Memphis ences Daily AV Cale III Quiz # 4 Applications of Partial Derivatives "vel surface F(x, v.2) = ]x 2 + y'?'=4 goes through the point P late the gradient of F at No equations for the plane tangent to the surface and the line norm ent Plane: al Line: ler the bivariate function /(x y) = x - 3x+ y -4v+12. ate the

Question 7 Sketch the region corresponding to the statement P(z > 2.2) Shade: Left of a value Click and drag the arrows to adjust the values. Left of a value Right of a value Between two values 2 regions -2 0 -1.5 Sketch the region corresponding to the statement P(z

If the population of the United States increased to 359 million and the number of representatives remained435, how manyAmericans, onaverage, would each representativeserve? With thispopulation, if the number of representatives were set at the constitutional limit of one representative for every30,000 people, how many representatives would there be

1. The probability distribution of the number of accidents in North York, Ontario is given by[SHOW ALL WORK]

Gender Male Female Swimmer 35 15 Sport Runner 55 40 Cyclist 30 25

Problem 2 (10 points) Suppose you built two classifier models MI and M2 from the same training dataset and tested them on the same test dataset using 10-fold cross- validation. The error rates obtained over 10 iterations (in each iteration the same training and test partitions were used for both MI and M2) are given in the table below. Determine

Suppose the heights of 18-year-old men are approximately normally distributed , with mean 65 inches and standard deviation 6 inches. (a) What is the probability that an 18-year-old man selected at random is between64and66inches tall? (Round your answer to four decimal places.) (b) If a random sample ofseven 18-year-old men is selected, what is the

A bottle maker believes that 10 % of his bottles are defective. If the bottle maker is right, what is the probability that the proportion of defective bottles in a sample of 628 bottles would be less than 12 % ? Round your answer to four decimal places. Answer Tables Keypad How to enter your answer (opens in new window) Keyboard Shortcut

How would you write different hypothesis for the question and how would you know what test is best to use? Exercise 12-9. The next set of questions is designed to help you get used to translating a political claim into a statistical hypothesis that can be tested. According to the U.S. Census Bureau, "The nation's public school districts spent an

Let X represent the full length of a certain species of newt. Assume that X has a normal probability distribution with mean 160.4 inches and standard deviation 6.5 inches. You intend to measure a random sample of n = 182 newts. The bell curve below represents the distibution of these sample means. The scale on the horizontal axis is the standard

Compute the value of the correlation coefficient, state hypothesis, test the significant of the correlation coeffieicnt, and give a brief explanation of the type of relationship At Bats and Hits The data below show the number of three-base hits (triples) and the number of home runs hit during the season by a random sample of MLB teams. Is there a

2. In a branching process, an individual has 0, 1 or 2 descendants with probability 1/4, 1/4, 1/2, respectively. Start the process at generation 0 with a single ancestor. Compute the expected population size at generation 3. Write an expression for the probability that the branching process dies out at or before generation 4. Do not evaluate.

How do I solve for this problem? I appreciate good handwriting and typing. I will rate your answer as "helpful". Thanks! 3. Let X1,..., Xn denote a random sample from the uniform distribution on the interval (0, 0). Define two estimators T1 = 2Xn, T2 = X(n). (a) Are Ti and T2 unbiased estimators of 0? Can you build another estimator which is

Please help me with questions a , b, c, and d. Appreciate it if you could solve these with a proper explanation . So that I can understand how to do them. Thank you. Please consider a' = 0 and b' = 0 ? 2. Consider the joint distribution below ( Note: a' = 0 and b' = 0 ): P(X = x, Y =y) Y=-1 Y=0 Y=1 P(X =x) + a=0 X =0 3-a' 4 2+a' b' = 0 32 32 32 X

The weight-loss business wants to explore whether women and men respond differently to the 3 diets. They collect the data shown below: a. State the null and alternative hypotheses to be tested to see if there is a difference in the average weight loss for women and men.(If possible, express the hypotheses symbolically). b. Indicate the p-value for

A 3-star hotel conducted a poll among its staff to ascertain the level of stress and job satisfaction. Comparing the responses of male and female staff on a question on job satisfaction provided the following data: (Sex of Respondent) : (Level of Job Satisfaction) Female Satisfied: 20 Female Unsatisfied: 10 Male Satisfied: 30 Male Unsatisfied: 40

Data box plot 4 questions The data modeled by the box plots represent the battery life of two different brands of batteries that Mary tested. Use this graph to answer Questions 1-4. Battery Life Brand X Brand Y 10 12 13 15 16 18 19 20 21 22 23 24 25 What is the median value of each data set? (Be clear of what your answer is for Brand X and Brand

Because all airline passengers do not show up for their reserved seat, an airline sells n = 125 tickets for a flight that holds only 120 passengers. The probability that a passenger does not show up is 0.15. Assume that the passengers behave independently. a.) Determine the probability mass function of the number of passengers (x) who show up for

Ms. Arceo studies if age correlates with the average number of hours of sleep, so she selected a random sample of size 11 and surveyed the needed data. age(x) 8 15 22 27 34 20 25 41 15 36 37 hours of sleep (y) 8 8 7 7 5 6 6 8 7 5 5Test the significance of the correlation coefficient at 0.01 level of significance. Correlation coefficient r: [a]For

Below is the formula for regression analysis REGRESSION ANALYSIS By using the least squares method (a procedure that minimizes the vertical deviations of plotted points surrounding a straight line) we are Y = bX + a able to construct a best fitting straight Change line to the scatter diagram points and then formulate a regression equation b =

An adviser is testing out a new online learning module for a placement test. They wish to test the claim that on average the new online learning module increased placement scores at a significance level of = 0.05. For the context of this problem, D = new - old where the first data set represents the new test scores and the second data set