- MacbethXA Sci. Rev., xA Sci. Rev., xE sci rev, erA Your wor XSCHOOL XContentZ Quiz Cha x7 Quiz Cha xoo CentralL X +A coker.blackboard.com/webapps/blackboard/content/contentWrapper.jsp?content_id- 464269_1&displayName-DQuiz+Chapters+7++10&c.A KA áModule 7: RegressionsQuiz Chapters7- 10MAT-203-W3Completed 0 of 4 Questions( 1 2 34 >O SaveV FinishSelect your answer from one of the following options.O A. Graph AOB. Graph BOC. Graph CCalculate the standardized test statistic z =Round your answer to 2 decimal places.Enter a numberUsing the standardized test statistic and the critical z-score, draw a conclusion and interpret your result.Select your answer from one of the following options.O a. Fail to reject the null hypothesis. There is enough evidence to conclude that the average number of screens per household in Hartsville is differentfrom the national average.Ob. Reject the null hypothesis There is not enough evidence to conclude that the average number of screens per household in Hartsville is differentfrom the national average.Oc. Fail to reject the null hypothesis. There is not enough evidenice to conclude that the average number of screens per household in Hartsville isdifferent from the national average.US O • O 5:13DELL E sci rev, erxA Your wori XA SCHOOL xContentQuiz Cha xQuiz Cha xA coker.blackboard.com/webapps/blackboard/content/contentWrapper.jsp?content_jd%3 464269 1&displayName%-DQuiz+Chapters+7++10&c.OLO Central L+áAT-203-W3Module 7: RegressionsQuiz Chapters 7 - 10Completed 0 of 4 Questions234 >O SaveA FinishQuestion15(T poimt)A national survey reports that the average number of screens (TVs, computers, tablets, and smartphones) in a single-family household 12.2, with astandard deviation of 5.12. You believe that average may be different in Hartsville. You collect a sample of 35 households in Hartsville, and find that theaverage number of screens is 10.82.Follow the outline to test the hypothesis at a significance level of a = 0.05:Ho : µ = 12.2H. : µ # 12.2Identify the critical z-score for a significance level of a = 0.05Select your answer from one of the following options.O a. z. = ±2.33O b. z. = ±1.96O C. z. = 2.33O d. z. = 1.64O e. z. = -1.64Which of the graphs below best represents the rejection region?US

( 1 2 3 4 ) O Save A Finish Question5 (i poinL) A national survey reports that the average number of screens (TVs, computers, tablets, and smartphones) in a single-family household 12.2, with a standard deviation of 5.12. You believe that average may be different in Hartsville. You collect a sample of 35 households in Hartsville, and find that average number of screens is 10.82. Follow the outline to test the hypothesis at a significance level of a = 0.05: Η, : μ 12.2 H.: µ # 12.2 Identify the critical z-score for a significance level of a = 0.05 Select your answer from one of the following options. O a. ze = ±2.33 O b. z. = ±1.96 Oc. ze = 2.33 O d. ze = 1.64 O e. ze = -1.64 Which of the graphs below best represents the rejection region?

( 1 2 3 4 ) O Save A Finish Question5 (i poinL) A national survey reports that the average number of screens (TVs, computers, tablets, and smartphones) in a single-family household 12.2, with a standard deviation of 5.12. You believe that average may be different in Hartsville. You collect a sample of 35 households in Hartsville, and find that average number of screens is 10.82. Follow the outline to test the hypothesis at a significance level of a = 0.05: Η, : μ 12.2 H.: µ # 12.2 Identify the critical z-score for a significance level of a = 0.05 Select your answer from one of the following options. O a. ze = ±2.33 O b. z. = ±1.96 Oc. ze = 2.33 O d. ze = 1.64 O e. ze = -1.64 Which of the graphs below best represents the rejection region?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Please help me with the questions on attached document. Thanks!
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open file attached for question
Which of the two samples in each set has the higher standard deviation. Answer this question by looking at the data without any computation. Explain your reasoning for each answer. Set 1 – Sample A: 16, 16, 16, 16, 16 – Sample B: 20, 20, 20, 20, 20 Set 2 – Sample A: 16, 16, 16, 16, 16 – Sample B: 15, 16, 16, 16, 16 Set 3 – Sample A: 20, 25, 25, 25, 30 – Sample B: 15, 25, 25, 25, 35 Set 4 – Sample A: 20, 20, 30, 40, 40 – Sample B: 20, 25, 30, 35, 40
Kindly also calculate the median, standard deviation and the coefficient of skewness from the data.
NEED HELP WITH: A,B,C please thanks
Please help me with this question.
I would like you to recheck these questions since there was a mix up with the standard deviation and the mean of the certified. A certified mechanic was timed for the repair of an automobile on 14 separate occasions. Over the same period a trainee mechanic was timed for the repair of a similar automobile. The times in minutes are given below. Certified 344 276 257 334 267 164 222 343 212 175 211 311 209 188 Trainee 222 342 178 234 398 232 377 211 309 190 351 343 177 269 a. Calculate a 99% confidence interval for the mean time taken to repair the automobile by the (i) certified mechanic (ii) the trainee mechanic