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For a particular year, the average ACT score for graduating seniors was 28. A guidance counselor is interested in knowing whether a new prep technique increases ACT scores for graduating seniors. She takes a random sample of 33 students and finds their mean on the ACT after the prep course to be 28.9 with an estimated standard deviation of 2.3. Test the null hypothesis at the .01 level of significance.

For a particular year, the average ACT score for graduating seniors was 28. A guidance counselor is interested in knowing whether a new prep technique increases ACT scores for graduating seniors. She takes a random sample of 33 students and finds their mean on the ACT after the prep course to be 28.9 with an estimated standard deviation of 2.3. Test the null hypothesis at the .01 level of significance.

MATLAB: An Introduction with Applications
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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For a particular year, the average ACT score for graduating seniors was 28. A guidance counselor is interested in knowing whether a new prep technique increases ACT scores for graduating seniors. She takes a random sample of 33 students and finds their mean on the ACT after the prep course to be 28.9 with an estimated standard deviation of 2.3. Test the null hypothesis at the .01 level of significance.
Transcribed Image Text:For a particular year, the average ACT score for graduating seniors was 28. A guidance counselor is interested in knowing whether a new prep technique increases ACT scores for graduating seniors. She takes a random sample of 33 students and finds their mean on the ACT after the prep course to be 28.9 with an estimated standard deviation of 2.3. Test the null hypothesis at the .01 level of significance.
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