7.2.31-TQuestion HelpA random sample of 75 eighth grade students' scores on a national mathematics assessment test has a mean score of 293. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam ismore than 285. Assume that the population standard deviation is 32. At a = 0.14, is there enough evidence to support the administrator's claim? Complete parts (a) through (e).(a) Write the claim mathematically and identify Ho and Ha. Choose the correct answer below.O A. Ho:H2 285 (claim)HaiH<285O B. Ho:H= 285 (claim)C. Ho: Hs 285Ha: u> 285 (claim)Ha: H> 285D. Ho: H= 285Ha:H> 285 (claim)O E. Ho:H<285Ha: µ2 285 (claim)OF. Ho: Hs285 (claim)Ha:H> 285(b) Find the standardized test statistic z, and its corresponding area.(Round to two decimal places as needed.)Enter your answer in the answer box and then click Check Answer.Check Answer3 partsremainingClear All3:40 PMN1/14/2021Type here to searchDelPrtScnF8HomeF9EndF10PgUpPgDnInsF11F12DIIF5F6F7EscF3F4F1F2Backspace2308134.ET.YTabF.GH.K(8)PR

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7.2.31-T Question A random sample of 75 eighth grade students' scores on a national mathematics assessment test has a mean score of 293. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on th more than 285. Assume that the population standard deviation is 32. At a = 0.14, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify H, and H. Choose the correct answer below. OA Ho: H2 285 (claim) O B. Ho: u= 285 (claim) Hu> 285 O E. H: u< 285 C. Ho: us 285 Hu<285 H3: u> 285 (claim) OD. H u= 285 Hu> 285 (claim) OF. H: us 285 (claim) H u> 285 Ha: p2 285 (claim) (b) Find the standardized test statistic z, and its corresponding area. z= (Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Check Answer Clear All parts remaining 340 PM

7.2.31-T Question A random sample of 75 eighth grade students' scores on a national mathematics assessment test has a mean score of 293. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on th more than 285. Assume that the population standard deviation is 32. At a = 0.14, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify H, and H. Choose the correct answer below. OA Ho: H2 285 (claim) O B. Ho: u= 285 (claim) Hu> 285 O E. H: u< 285 C. Ho: us 285 Hu<285 H3: u> 285 (claim) OD. H u= 285 Hu> 285 (claim) OF. H: us 285 (claim) H u> 285 Ha: p2 285 (claim) (b) Find the standardized test statistic z, and its corresponding area. z= (Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Check Answer Clear All parts remaining 340 PM

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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5.46 Student performance across discussion sections: A professor who teaches a large introductory statistics class (197 students) with eight discussion sections would like to test if student performance differs by discussion section, where each discussion section has a different teaching assistant. The summary table below shows the average final exam score for each discussion section as well as the standard deviation of scores and the number of students in each section. Sec 1 Sec 2 Sec 3 Sec 4 Sec 5 Sec 6 Sec 7 Sec 8 ni 33 19 10 29 33 10 32 31 x̄i 92.94 91.11 91.8 92.45 89.3 88.3 90.12 93.45 si 4.21 5.58 3.43 5.92 9.32 7.27 6.93 4.57 (d) What is the p-value associated with this ANOVA test?_________ (please round to four decimal places) (e) Interpret the conclusion of the test in the context of the study: ( )Since p ≥ 0.05, we do not have enough evidence to claim a difference in average scores across the different sections ( )Since p is close to 0.05, we cannot make a…
5.46 Student performance across discussion sections: A professor who teaches a large introductory statistics class (197 students) with eight discussion sections would like to test if student performance differs by discussion section, where each discussion section has a different teaching assistant. The summary table below shows the average final exam score for each discussion section as well as the standard deviation of scores and the number of students in each section. Sec 1 Sec 2 Sec 3 Sec 4 Sec 5 Sec 6 Sec 7 Sec 8 ni 33 19 10 29 33 10 32 31 x̄i 92.94 91.11 91.8 92.45 89.3 88.3 90.12 93.45 si 4.21 5.58 3.43 5.92 9.32 7.27 6.93 4.57 The ANOVA output below can be used to test for differences between the average scores from the different discussion sections. Df Sum Sq Mean Sq F value Pr(>F) section 7 525.01 75 1.87 0.0767 residuals 189 7584.11 40.13 Conduct a hypothesis test to determine if these data provide convincing evidence that the average…