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february 2021
06

Mathematics Questions and Answers February 06, 2021

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Solve using given information sample of 13 shearing pins is taken in a study of the Rockwell hardness of the pin head. Measurements on the Rockwell hardness are made for each of the 13, yielding an average vaII a sample standard deviation of 1.5. Assuming the measurements to be normally distributed, construct a 99% condence interval for the mean

Question / of 8 (1 point) | Question Attempt: 1 of 1 Expan 2 3 5 8 For a new study conducted by a fitness magazine, 285 females were randomly selected. For each, the mean daily calorie consumption was calculated for a September-February period. A second sample of 245 females was chosen independently of the first. For each of them, the mean daily

please help 3.For the each of the following studies determine whether a repeated-measures & test is the appropriate analysis. Explain your answers for each (6 points total; 2 points each) a. A researcher is examining the effect of violent video games on behavior by comparing aggressive behaviors for one group who just finished playing a violent

i need help with this 16. Uninsured: It is estimated that 16.6% of all adults in the U.S. are uninsured. You take a random sample of 250 adults seen by a certain clinic and find that 50 are uninsured. (a) In such groups of 250 U.S adults, what is the mean number of those that would be uninsured? (b) What is the standard deviation? (c) In your

Conclusion & Scatterplots The school board hired you to sort through the statistics, so present your results in a fashion that best communicates the message. In other words, create a scatterplot for each of the motivation/variable relationships (hint: 3 separate scatterplots) and provide a brief conclusion describing each of them. Consider the

Question 3) The following are SAS output for multiple comparison tests Tukey and Bonferroni Methods. Lukey Mehtad Alpha 0.05 Error Degrees of Freedom Error Mean Square 20.36667 Critical Value of Studentized Range 3.77289 Minimum Significant Difference 7.6146 Comparisons significant at the 0.05 level are indicated by **# Simultaneous Difference 95%

Apple in the past had 6.8% of its iphone's being fixed under warranty. they would like to test if this portion has changed. so they wold randomly select 275 iphones and find that 27 were fixed under warranty. using the significance of .05, test to see if this portion has changed 1 which is the correct alternative hypothesis? 2 what is the values

A 9-year-old girl did a science fair experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under her hand without seeing it and without

show process pls 3. (2 marks) Part of the direction field for a function y = y(t) which satisfies the differential equation 3y' = y - y is shown below. (a) Using the diagram to make a guess for a solution to the DE with initial condition 3y' = y - y; y(0) = 1 from these options: A. y =12 +1 C. y = e3t E. y = -et B. y = 1 D. y =et+1 F. none of

An experiment investigates a dietary approach to treating depression. Researchers randomly assigned 20 subjects to two treatment groups, one taking a high dose of calcium supplements and the other a placebo. a) Why is it important to randomize in assigning the subjects to the two groups? O A. It should equalize the effects of unknown or

Answer questions Must include explanation of how Pascal's triangle was used. Answer: 5) A set has 6 elements. How many different subsets with 4 elements are there? Answer: 6) For a gameshow, there are 9 spots to select on a board. You get to choose 3 of them in order to try to find the grand prize. How many different ways are there to select your

A hospital compiled the following annual statistics for 20XX (a non-leap year) Calculate the correct answer for questions 20-22 (rounding to 1 decimal place) Community Hospital Annual Statistics, 20XX Inpatient Serv Days Bed Count January - June 32,785 175 July - December 34,986 200 December 31 only 201 200 Newborn 12,372 40 Calculate the

Cul de las siguientes afirmaciones acerca del Teorema del Lmite Central (TLC) es correcta? Cual de las siguientes afirmaciones acerca del Teorema del Limite Central (TLC) es correcta? O EI TLC afirma que la distribucion de muestreo de la media muestral x es aproximadamente normal para tamanos de muestra grande ( n 2 30) O El TLC afirma que la

Need help with parts A-C, dont know if I am inputting the answers wrong or just not using the right equation but stuck on this problem Once an individual has been infected with a certain disease, letX represent the time (days) that elapses before the individual becomes infectious. An article proposes a Weibull distribution with a = 2.2, L? = 1.4,

Microsoft Excel 16.0 Answer Report Worksheet: [Book2.xlsx]Sheet2 Report Created: 6/17/2021 2:41:58 AM Result: Solver found a solution. All Constraints and optimality conditions are satisfied. Solver Engine Engine: Simplex LP Solution Time: 0.016 Seconds. Iterations: 2 Subproblems: 0 Solver Options Max Time Unlimited, Iterations Unlimited,

Week & Chapter 6 - Normal Drew x a Standard Normal Distribution Tal / Mail - Tracy Gornto- Outlook + reconcourses/3321 131/ assignments/325976287module Reminds7356/106 S Notifications @ ball-beany1569 3 1 Reps//consulignitor & Microbiology-Exce.. @ DLSI Online: Log in.. @ Create a New Study. Read Question 3 5 pts 9 1 2 94 0 Details On average,

1.You intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Your sample size is 31. Find the critical value that corresponds to a confidence level of 99.9%. (Report answer accurate to three decimal places with appropriate rounding.) t* = 2.If n=21, x=49x=49, and s=3, find the

Please use this link to help you with these questions https://docs.google.com/spreadsheets/d/16QUO44CSnnPZgEOTPlGudkB_Yjkh4u1ae3Z5QCpkirM/edit?usp=sharing 67Use the linked data to answer questions 1 and 2. Data data by B.Singleton adapted from ww2 amstats.org 1a. Write a statistical question that could be answered using the given data 1b. Sort

Two area hospitals have jointly initiated several planning projects to determine how effectively their emergency facilities can handle disaster-related situations at nearby Tech University. These disasters could be weather related, such as a tornado, a fire, accidents (such as a gas main explosion or a building collapse) or acts of terrorism. One

Assume that random guesses are made for nine multiple choice questions on an SAT? test, so that there are n=9 ?trials, each with probability of success? (correct) given by p=0.4. Find the indicated probability for the number of correct answers.Find the probability that the number x of correct answers is fewer than 4.P(X Assume that random guesses

How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months), and let y be the average weight of the pony (in kilograms). x 3 6 12 20 25 y 60 95 140 152 181 (b)Would you say the correlation is low, moderate, or strong? low moderate strong Would you say the correlation is positive or negative? positive negative (c)Use a

Numerous states in U.S.A have a lottery game, normally called a Pick-4, in which you pick a fourdigit number, for example, 7359. During the lottery drawing, there are four canisters, each containing balls numbered 0 through 9. One ball is attracted from each receptacle to shape the four-digit winning number. There are numerous varieties of this

3. According to a study published by the National Institute of Health, during intercourse condom breakage rates fall between 0.4% and 2.3%. Suppose that the breakage rate of Brand XTZ is 1.5%. A Brand XTZ Pleasure Pack contains 10 condoms. What is the probability that at least one of the condoms in the pack will break during intercourse

Chapter 12: Correlation Concepts 18 Score: 7/21 8/21 answered Question 20 Run a regression analysis on the following bivariate set of data with y as the response variable. X y 47.5 47.8 43.3 65 37.8 27.5 48.3 55.9 48.9 69 42.2 30.1 37.1 34 47 45.7 rse 1 44.5 53.1 41.1 36.4 52.9 72 52.6 51.2 Find the correlation coefficient and report it accurate

The beneficial effects of exercise interventions for older people with frailty were investigated in a randomized controlled clinical trial. The duration of the intervention was 12-week. Eighty-four participants were recruited. Forty-five were randomized to intervention and 39 to control. Forty intervention participants and 30 control participants

Hello can you please help me with the problem attached by showing the work so I can have a better understanding for similar problems 7. A CBS News / N. Y. Times poll found that 329 out of 763 adults said they would travel to outer space in their lifetime, given the chance. (a) [2pt] Find a point estimate 13 for the proportion of all adults who

QUESTION 1 Assume P[AnB) = 0, what do we call such sets A 8. B? (You need to type one or two words below, spelling matters). QUESTION 2 If P(A) = 0.5 and P(B) = 0.3 and P(AnEt} = 0.23, then calculate P(AuB) QUESTION 3 Imagine I am marketing a new brand of yoghurt called yogorlicious and | ask 100 yoghurt shoppers two questions: 1)Age {either young

A local bakary has determined a probability distribution for the number of cheesecakes that they sell in a given day. X= #sold 0 5 10 15 20 Probability 0.25 0.13 0.33 .? 0.19 Give at least 2 decimal places, when needed. What is the probability of selling 15 cheesecakes in a given day? What is the expected number of cheesecakes sold in a day? Submit

Please help me with this A quality analyst wants to construct a sample mean chart for controlling a packaging process. He knows from past experience that when the process is operating as intended. packaging weight is normally distributed with a mean of twenty ounces. and a process standard demation of two ounces. Each day last week. he randomly

The cycle time for trucks hauling concrete to a highway construction site is uniformly distributed over the interval 50 to 70 minutes. ' What is the probability that the cycle time is below 60 minutes? a What is the probability that the cycle time exceeds 65 minutes if it is known that the cycle time exceeds 55 minutes? 0 Let the cost of hauling

The weights of a certain brand of candies are normally distributed with a mean weight of 0.8556 g and a standard deviation of 0.0522 g. A sample of these candies came from a package containing 463 candies, and the package label stated that the net weight is 395.3 g.(If every package has 463 candies, the mean weight of the candies must exceed

Open the data set aids.dta . The variable year is for calendar year, hivinf is for HIV infections in millions and aidscases is for AIDS diagnoses. Datasheet link: https://docs.google.com/spreadsheets/d/1V9E5lz5K1gGjmAi0aW6PNrPOEKYTI4P7ZJsv5Te8WAI/edit?usp=sharing Just want to verify if my answers are correct. Please use statistical software and

Help please! A study was carried out to determine if Reiki touch therapy was useful in the reduction of average pain levels in chronic pain sufferers. The pain level reported by a random sample of 8 patients before and after the therapy session is shown below. Test whether there has been a reduction in pain after the therapy using a significance

Ans step by step please mention its sample or population Students in a statistics class were asked to report the number of hours they sleep at night during weekdays and weekends. The data for a random sample 8 students were recorded as follows Students 1 2 3 4 5 6 7 8 Weekdays 8 5.5 7.5 8 7 6 6 8 Weekends 4 7 10.5 12 11 9 6 9 Construct a 90%

Compute and derive... 1. Suppose that we have a sample {Yi} , which is constructed by Yi = Di te, i=1, ...,n where { D;} is a set of dummy variables, i.e. D; = 1 with probability p and D: = 0 with probability 1 - p, and {} is an iid sample of Normal (1, g?) and they are independent of each other. Here note that o, p, At, and o' are unknown

Question 15 4 6 8 NO CO As shown above, a classic deck of cards is made up of 52 cards, 4 suits with clubs and spades black and diamonds and hearts red. There are 13 cards each suit: #2-10, jack, queen, king and ace. Picture (or face) cards are the jack, queen, and king. If you select a card at random, what is the probability of picking a face

explain in detail The alternating current (AC) breakdown voltage of an insulating liquid indicates its dielectric strength. An article gave the accompanying sample observations on breakdown voltage (kV) of a particular circuit under certain conditions. 62 50 53 58 42 54 55 61 59 64 51 54 64 62 50 68 54 56 58 50 56 50 57 56 46 56 54 55 52 47 48 55

Based on a poll, 61% of Internet users are more careful about personal information when using a public Wi-fi hotspot. What is the probability that among three randomly selected Internet users, at least one is more careful about personal information when using a public Wi-Fi hotspot? How is the result affected by the additional information that the

10 TB MC Qu. 14-99 (Algo) A real estate analyst believes that... A real estate analyst believes that the three main factors that influence an apartment's rent in a college town are the number of bedrooms, the number of bathrooms, and the apartment's square footage. For 40 apartments, she collects data on the rent (y. in $). the number of bedrooms

all the question in the picture 1. Let's say we have two groups, group 1 = 9- to 15-year-old girls & group 2 = 16- to 22-year- old girls, who are given questionnaires regarding their desire to see a "boy band" in concert. The questionnaire was rated on a scale of 1 = no desire to see the boy band to 10 = extremely high desire to see the boy band.

The sale prices for homes in a certain city are as follows. Location Price 415 First Street $ 275,000 957 Locust Street 450,000 114B First Street 150,000 Cytrus Heights 2,590,000 814 Duncannon 230,000 482 Circle Court 315,000 1580 De Soto Dr. 150,000 118 Moss Road 220,000 Find the mean, the median, and the mode. (If an answer does not exist, enter

Jorge would like to predict the profit for 2020 based on the 2019 profit of nine stores he manages.The data are provided below (in $10000) 20202019 4341 5149 3744 2432 4746 4442 5047 5551 4649 a: If each additional dollar of profit earned in 2019, how much additional profit would one expect for 2020? write answer to two decimal places b: If a

please answer all parts of question specifically Four functions are given below. Either the function is defined explicitly, or the entire graph of the function is shown. For each, decide whether it is an even function, an odd function, or neither. The function r The function s D Even O Even O Odd Odd Aa O Neither Neither Even Even 2 g x = - 6x +

A researcher at an alcohol treatment center conducts a study of client satisfactionwith treatment methods A, B, and C. The researcher randomly assigns each of theavailable 10 clients to receive one of these treatments; four clients end up withTreatment A, three with Treatment B, and three with Treatment C. Two weeks later,the researcher measures

Part 1 of 4 Score: 0 of 1 You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 71 dates, the mean record high daily temperature in a

For a random sample of size2, obtain the probability that the sampling error made in estimating the population mean by the sample mean will be 1 inch orless; thatis, determine the probability that x will be within 1 inch of . Interpret your result in terms of percentages. Homework: My Lab Chapter 7 The Sampling Distribution of the Save Score: 0.68

= Test: Fina...

Which of the following statements is true of the F distribution: Question 37 options: the values range from minus infinity to plus infinity the distribution has a mean of 0 and a standard deviation of 1 the distribution is symmetrical the area under the curve adds up to 1.0 what is D 0 ? Question 39 options: The hypothesized difference between two

can you please send the answer a little bit faster please PRACTICE ANOTHER (a) Suppose n = 6 and the sample correlation coefficient is r = 0.904. Is r significant at the 1% level of significance (based on a two-tailed test)? (Round your answers to three decimal places.) In USE SALT = critical t = Conclusion: Yes, the correlation coefficient p is

What is the difference between A/B testing and Multivariate testing?Describe a situation where an A/B test would be more suited as a data-gathering method than a multivariate testWhat is the difference between A/B testing and Multivariate testing?Describe a situation where an A/B test would be more suited as a data-gathering method than a

An investor believes that investing in domestic and international stocks will give a difference in the mean rate of return. They take two random samples of 15 months over the past 30 years and find the following rates of return from a selection of domestic (Group 1) and international (Group 2) investments. Can they conclude that there is a

this is all the information please help me I'm having a hard time , thank you .: centered on information regarding the Donner Party, which was a group of folks who traveled west during the California Gold Rush of the late 1840's. This group got caught by early snowfall and had to spend much of the winter in the mountains in eastern California.

Moduel 6 Chi Square Goodness of Fit Testing with M&Ms The plain M&M's Milk Chocolates are mass-produced with a distribution of 24% blue, 20% orange, 16% green, 14% yellow, 13% red and 13% brown.The peanut M&M's are mass-produced with a distribution of 23% blue, 23% orange, 15% green, 15% yellow, 12% red and 12% brown. Open a packet of your

Suppose someone spins the spinner shown to the right once. Find the probability that the outcome is a 2, 4 given that it is at least 2. Assume that the spinner 2 cannot end up on a line, but otherwise all directions are equally likely for the final position of the spinner. The probability is (Type an integer or a simplified fraction.)

explain the concept Explain the concept of the power of a test. Choose the correct answer below. @ A. The probability that the null hypothesis is rejected when the alternative hypothesis Is false. O B. The probability that the null hypothesis is rejected when the alternative hypothesis is true. O C. The probability that the null hypothesis is not

4 decimals. Thank you! Application Exercise: Solaray Pills were advertised as having 749 mg of vitamin C per pill. A marketing rm hypothesizes that the amount of vitamin C is not what is advertised. What can be concluded with a = 0.05. The vitamin C content per pill from a sample of pills is as follows: 701, 761, 716, 721, 751, 721, 711, 741

7 TB MC Gu. 1&104 Wool A sociologist examines the relationship between... A sociologist examines the relationship between the poverty rate and several socioeconomic [actors For the 50 states and the District of Columbia to = 51!. he collects data on the poverty rate (y. In '15). theI percent of the populalton with at least a high school educatlan

Suppose five explanatory (independent) variables, X1, X2, X3, X4 and X5 are being considered to predict y . Some results of 6 of the possible 32 models are given below. State the multiple regression equations for Model 3 and Model 4. How much of the variation in y is explained by the models 3 and 4 in part (a)? Of the six models given which appear

The A-B-C department of a large company makes three products (A, B and C). To determine the best production schedule, the manager has formulated the following linear programming model: Decision variables: A = quantity of product A B = quantity of product B C = quantity of product C Objective function: Maximize 12 A + 15 B + 16 C (total profit:

please help A presidential candidate's aide estimates that, among all college students, the proportion p who intend to vote in the upcoming election is at least 60%. If 112 out of a random sample of 220 college students expressed an intent to vote, can we reject the aide's estimate at the 0.1 level of significance? Perform a one-tailed test. Then

Must show calculations/formula for credit. Any answer given with no calculations/descriptions of how arrived at answers shown will result in no credit for that answer. If utilizing excel must state/describe your formulas used and your inputs I strongly suggest you use excel for this project. The calculations are accomplished much simpler, quicker,

question 11 (Questions 11-15). This data comes from an experiment to determine if different type of rewards (fixed or progressive) are related to smoking outcomes. Use a critical value of 5.991. Observed Progressive Fixed No reward No smoking 10 6 1 Some Smoking 10 14 19 11. What percentage of those who were not smoking received the fixed reward?

Please help 3. Two towns are connected by a network of communication channels as shown in the following gure, in which -||- denotes a communication channel. The probability of a channel's failure-free operation or its reliability is R, and channel failures are independent. Minimal level of communication between towns can be guaranteed provided at

A preliminary survey shows that 33% of college students smoke. In a class of 43 students, what is the probability that more than 48% of the students smoke? UseAppendix B.1for the z -values. (Round the z -value to 2 decimal places and the final answer to 4 decimal places.) Probability \f

enMath X Math 111 | ch 6&7 review Bb Upload Assignment: Click here nyopenmath.com/assess2/?cid=98126&aid=7700418#/skip/20 The recidivism rate for convicted sex offenders is 9%. A warden suspects that this percent is higher if the sex offender is also a drug addict. Of the 376 convicted sex offenders who were also drug addicts, 41 of them became

The annual rate of return an a mutual Fund is uunualljr distributed with a mean at 14% and a standard deviatiuu at 13%. [Use Excel to salve this queson and submit yum- Excel File]. a] 1F.I'J'hat is the pruhabilitjr that the fund returns mere than 25% next year? [5 Points] 1:) What is due probability that the fund leses mane? next year? {5 Paints]

O It is not possible to determine the margin of error from this information. D Question 5 1 pts Which type of sampling method is being employed in the following example: "A huge line has formed at the Apple store. The customers are waiting to purchase the new iphone 6s. A new reporter decides to ask every 5th person why they prefer iphones over

please help with this one 6. In the following experiments, identify the independent variable, the conditions, and the dependent variable: (a] studying whether final exam scores are influenced by whether concurrent background music is soft, loud, or absent; (b) comparing students from small, medium, and large colleges with respect to how much fun

Evaluate the following limits when they exist. 1. limx-o - tanx-x 2. limx-o(cscx - cotx) 3. limx-o(1 + )bx 4. limx-0+ ( -7) 5. lim, " cos x Find by implicit differentiation. 6. sin(xy) = 1 + cosy 7. tan-' (x2y ) = x+xy2 8. cos(xy) = sin (x + y) Differentiate the function. 9. y = log2(xlog3X) 10. f (x) = arctan(sec(x)) 11. f(x) = logs (1 + arcsinx)

These must be done in excel please 7. Historical data show that customers who download music from a popular Web service spend approxi- mately $26 per month, with a standard deviation of $8, normally distributed, but never spend more than $30. Assuming that each customer is independent of the others, predict the average amount of the next ten

Q 21 Question 21 Statistics professor Dr. Stat claimed his pulse rate at the peak of an exercise program was lower than the mean pulse rate of statistics students. Dr. Stat's pulse rate was measured to be 60.0 bpm. His 20 students had a mean pulse rate of 74.4 bpm with a standard deviation of 10.0 bpm. What critical value you should use to test

A small country is comprised of four states, A, B, C, and D. The population of each state is given in the following table. State A B C D Total Population 108000 216000 324000 402000 1050000 Standard Quota 3.6 7.2 10.8 13.4 According to the country's constitution, the congress will have 35 seats, divided among four states according to their

AutoSave . OFF WAY. CG ... Document30 9 Home Insert Draw Design Layout References Mailings Review View Tell me Share Comments Calibri (BO. 12 A A Aa v AaBbCcDdEe AaBbCcDdEe AaBbCcD AaBbCcDdE AaBb AaBbCcDdEe Paste BIU A v A v Normal No Spacing Heading 1 Heading 2 Title Subtitle Styles Dictate Editor Pane In a study of the accuracy of fast food

Joseph wants to estimate the mean number of siblings for each student in his school. He records the number of siblings for each of200 randomly selected students in the school. What is the sample? Select the correct answer below: all the students in the school the200randomly selected students the mean number of siblings for the randomly selected

Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and prepreview ads before the movie starts. Many complain that the time devoted to previews is too long. A preliminary sample conducted by The Wall Street Journal showed that the standard deviation of the amount of time

Any help Test: TEST #3 (Chapters 12, 13, 14) Time Remaining: 01:24:56 Submit Test This Question: 1 pt 1 of 18 (0 complete) This Test: 18 pts possible Susan's friends Vicki, Luis, Maddy, Hank, and Rob have volunteered to help with the preparations for a party. How many ways can Susan assign someone to buy beverages, someone to arrange for food, and

1. From a sample of 50 individuals, age 36-50, 25 individuals read newspapers to find out the news. From a sample of 50 individuals over age 50, 30 individuals read newspapers to find out the news. Can we reject the null hypotheses that the news is read equally for both age groups? Significance level is 5%. tails crit alpha = Ho: Ha: Decision:

[n the game of roulette, a steel ball is rolled onto a wheel that contains 13 red, 1E| black. and 2 green slots. [f the hall is rolled 25 times, nd the probabilities ofthe following events. [Use Excel to solve this quesen and submit your Excel File]. a] The hall falls into the green slots two or more times. {5 Points] b] The hall does not Fall

I ne officer groups the batches made in a month into which shift they are made. The number of defective items is counted in randomly selected batches in each shift. The officer takes the first 10 batches and counts the number of defective items. 1. simple random sample The officer chooses every 2. stratified sample 15th batch off the line and

Sample B - Large data sample QUESTION 9 Birth year Height Belly button 1997 93 Investigate how the ABS obtained the Sample B data in 2012. Typing keywords into a search 1997 154 89 engine's search bar will reveal facts about how this data was obtained. Compare the ABS' method 1997 154 95 of data collection to the data collection technique in

In what follows use any of the following tests/procedures: Regression, confidence intervals, one-sided t-test, or two-sided t-test. All the procedures should be done with 5% P-value or 95% confidence interval. Open Brain data: https://www.limes.one/Content/DataFiles/Brains.txt SETUP: It is believed that the larger the head circumference the larger

Hi.. thank u A software vendor markets a new virtual game with two experimental packaging designs. Design A is sent to 11 stores whose average sales the first month is 52 units with a sample standard deviation of 12 units. Design B is sent to 6 stores whose average sales the first month is 46 units with a sample standard deviation of 10 units.

If bolt thread length is normally distributed, what is the probability that the thread length of a randomly selected bolt is L USE SALT (a) Within 0.7 SDs of its mean value? (Round your answer to four decimal places.) (b) Farther than 2.1 SDs from its mean value? (Round your answer to four decimal places.) (c) Between 1 and 2 SDs from its mean

please answer these The Bank of America would like to investigate if a difference exits in the proportion of people with low income (less than $50,000) who rely on food assistance between the states of Texas, Michigan, Florida, and New York. The following table shows the number of low income people who rely on food assistance from random samples

Need help with 2 math problems. View screenshot below for problems please. SHOW YOUR WORK Don't forget that all of your work should be shown neatly using all of the guidelines provided up to this point in this course. @ You will need to upload your work for this quiz, so please show your work neatly DURING the quiz. Maximize Z = 2+1] 9: + 51; S 40

Help with homework QUESTION 16 A random sample of 34 students at ZU showed an average age of 25 years and a standard deviation of 2 years. Which distribution should we use to construct the 98% condence interval for the mean age of all ZU students? 0 Standard normal distribution 0 t-distribution with 33 degrees of freedom 0 Neither t nor standard

B. X1-x3 = simplify your answer type in integer or decimal do not round.C. X2-x3 = simplify your answer type in integer or decimal do not roundD. Find the tukey - Kramer critical ranger CR know that since the samples are the same size cr1,2 = cr1,3 =cr2,3= CRCR= round to two decimal places as needed.E. Conclude that the means for ________ are

2) The plant managers for the Brand-X Cereal Company are responsible for periodically checking the variability of the weight of the boxes of cereal produced. Adjustments are made to the machine that loads the boxes if the sample variance SK 2 of the weights of a sample of 51 boxes exceeds 1.2825 ouncesz. If, with the current setting of the

You wish to test the following clalm (H...) at a signicance level of a = 0.01. H0113: = P2 Ha up > p2 You obtain 53.3% successes in a sample of size m = 623 from the rst population. You obtain 46.1% successes in a sample of size n; = 283 from the second population. Round your estimated values to two decimal places for increased accuracy. What is

MULTIPLE CHOICE QUESTIONS Q1. A decision to retain or reject null after conducting one sample t test depends on: A) Expected result B) What we would really like to see C) Test value D) P value E) Measurement scale of the test variable Q2. Following are few 95% confidence for odds ratio reported by various case control studies on the same topic.

The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 307 days or longer. b. If the length of pregnancy is in the lowest 4?%, then the baby is premature. Find the length that separates premature babies from those who are not premature.Click to

answer the :1) Students in a class of 4-3 vote on a date for an exam. Each student votes for just one of the ve possible days. How many different ways may they vote? 1}} Five students choose a different topic from a list of eight topics for their nal report. How many choices may the class make? c) Consider a circle with n points marked on it, n 2

Thermoset Corporation produces a specialty fibrous material that is used by sports equipment manufacturers. One key input used in the production process is a high grade of jute which comes from a special hybrid of jute plant. Supply issues have led to Thermoset having to use three different sources of jute in its production process over the past

1. (10 points) A sample of size 50 from population A yields a sample proportion of 0.70, and a sample of size 75 from population B yields a sample proportion of 0.55. a. Find the standard error of the distribution of differences in sample proportions. b. Determine whether the sample sizes are large enough for the Central Limit Theorem to apply

E Homework: S...

Problem 2: Suppose we observe a random variable X having the exponential distribution with parameter 1, which means that X has the density Ae-Ax if x > 0 fx (2; 1) = otherwise, (a) For A1 > 4, find the critical region of the likelihood ratio test for testing Ho : 1 = 4 against H1 : 1 = 1 at level of significance a = 0.05. (b) For 1

1) )Consider the given discrete probability distribution. Find P(x 3). Round your response to one decimal place \f\f\f

6. [-/10.5 Points] DETAILS ILLOWSKYINTROSTAT1 7.2.073.HW. MY NOTES ASK YOUR TEACHER Suppose that the duration of a particular type of criminal trial is known to have a mean of 15 days and a standard deviation of 5 days, We randomly sample 9 trials. Part (a) In words, define the random variable EX the total number of days for the nine trials the

Ten individuals went o t for 12 weeks to lower thei test at the 5% level. starting cholesterol level Ending cholesterol level 220 220 -200 280 260 240 NOTE: If you are using a Student's t-distribution for the problem, including for paired data, outed. (In general, you must first prove that assumption, though.) ( Part ( 2 ) State the null

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with mean 1252 and standard deviation 129 chips. (a) What is the probability that a randomly selected bag contains between 1000 and 1400 chocolate chips? (b) What is the probability that a randomly selected bag contains fewer than 1025

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