A researcher wants to test the claim that convicted burglars spend an average of 18.7 months in jail. She takes a random sample of 11 such cases from court files and finds that x = 21.5 months and s = 7.4 months. Test the claim that u = 18.7 months at the 0.05 significance level. Use the traditional method of testing hypotheses.

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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Assume that a simple random sample has been selected from a normally distributed population and test the given claim.
Use either the traditional method or P-value method as indicated. Identify the null and alternative hypotheses, test statistic, critical value(s) or P-value (or range of P-values) as appropriate, and state the final conclusion that addresses the original claim.

A researcher wants to test the claim that convicted burglars spend an average of 18.7
months in jail. She takes a random sample of 11 such cases from court files and finds that x
= 21.5 months and s = 7.4 months. Test the claim that u = 18.7 months at the 0.05
significance level. Use the traditional method of testing hypotheses.
Transcribed Image Text:A researcher wants to test the claim that convicted burglars spend an average of 18.7 months in jail. She takes a random sample of 11 such cases from court files and finds that x = 21.5 months and s = 7.4 months. Test the claim that u = 18.7 months at the 0.05 significance level. Use the traditional method of testing hypotheses.
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