Question

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, and state the final conclusion that addresses the original claim. A researcher wants to test the claim that convicted burglars on average of 18.7 months in jail. She takes a random sample of 11 such casas from court files and find that ?̅ = 21.2 months and s = 7.4 months. Test the claim that µ = 18.7 months at the 0.05 significance level. Hint: identify the null and alternative hypotheses, test statistic, critical value(s) or P-values, and state the final conclusion that addresses the original claim.

Answer 1