MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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a. state the null and alternative hypothesis
b. calculate test statistic
c. what are the df? what is/ are the critical values?
Transcribed Image Text:A psychiatrist wants to test a drug claimed to decrease anxiety episodes in depressed
patients. A group of n = 50 subjects participates in her program and their anxiety
episodes are counted. The sample produces M = 22.78, s 5.63. It is known that
the population value for this measure is m 25. Test the hypothesis that the
program decreases anxiety episodes. Test with a = .01.
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