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

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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QUESTION 6
In a test, the average score is 100 with a standard deviation of 15. You believe that the
average score for your class is different from 100. You took a sample of 30 students. The
average score for this group is 140 with a standard deviation of 15. Test the hypothesis that
the average score is greater. Use a = .05.
The rejection region for the test statistic is...
less than -1.959963985 and greater than 1.959963985
less than - 2.045229642 and greater than 2.045229642
O less than - 1.644853627 and greater than 1.644853627
none of the above
Transcribed Image Text:QUESTION 6 In a test, the average score is 100 with a standard deviation of 15. You believe that the average score for your class is different from 100. You took a sample of 30 students. The average score for this group is 140 with a standard deviation of 15. Test the hypothesis that the average score is greater. Use a = .05. The rejection region for the test statistic is... less than -1.959963985 and greater than 1.959963985 less than - 2.045229642 and greater than 2.045229642 O less than - 1.644853627 and greater than 1.644853627 none of the above
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