Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Use the traditional method . Identify the null and alternative hypotheses, test statistic, critical valuels), 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 i = 21.3 months and s = 7.7 months. Test the claim that u = 18.7 months at the 0.05 significance level. Use the traditional method of testing hypotheses. Show all work on separate paper. Only state the conclusion here. (L015) A consumer products researcher claims that the typical laptop battery provides the user with more than 5.37 hours of use. Assume that the data is normally distributed, n = 22, and the value of (T is unknown. Find the critical value(s) for the hypothesis test with significance level of 0.01. Fone Batteries Incorporated claims that the proportion of defective cell phone batteries is not 9%. A random sample of 160 batteries showed that 10 were defective. Find the value of the test statistic