QUESTION 6In a test, the average score is 100 with a standard deviation of 15. You believe that theaverage score for your class is different from 100. You took a sample of 30 students. Theaverage score for this group is 140 with a standard deviation of 15. Test the hypothesis thatthe average score is greater. Use a = .05.The rejection region for the test statistic is...less than -1.959963985 and greater than 1.959963985less than - 2.045229642 and greater than 2.045229642O less than - 1.644853627 and greater than 1.644853627none of the above

Answered: Image /qna-images/answer/a16204c5-909f-46c1-972f-fcf7936ca207.jpg

Answered: In a test, the average score is 100…

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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Are you smarter than a second-grader? A random sample of 59 second-graders in a certain school district are given a standardized mathematics skills test. The sample mean score is X=56. Assume the standard deviation of test scores is o= 15. The nationwide average score on this test is 50. The school superintendent wants to know whether the second-graders in her school district have greater math skills than the nationwide average. Use the a = 0.05 level of significance and the P-value method with the TI-84 calculator. Answer the following questions.
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