# Question

Your friend Fred claims that his average gym workout time is at least 150 minutes per day. You pick a random sample of 10 days and observe that on the days in the sample, Fred’s average workout time was 136 minutes. The standard deviation of workout times in the sample was 28 minutes. You plan to use the sample results to test Fred’s claim. Assume that Fred’s workout times are normally distributed. Set up an appropriate hypothesis test to test Fred’s claim. Use a significance level of 5%. Should Fred’s claim be rejected? Explain.

## Answer to relevant Questions

Refer to Exercise 70. Suppose sample size was 50 days rather than 10 days. Show the proper hypothesis test and report your conclusion. In exercise Your friend Fred claims that his average gym workout time is at least 150 ...You have set up a hypothesis test to determine if the plywood sheets being produced by your mill meet company standards. For each large batch of sheets, you select a sample of six sheets and count the number of surface flaws ...Central Command (CentCom) intends to evaluate the average time it takes new Marine trainees to successfully complete a proposed preliminary physical fitness test. CentCom wants the average time (μ) not to exceed 800 ...In its Audit of Computerized Criminal History, the Florida Department of Law Enforcement (FDLE) periodically reviews the accuracy and completeness of its criminal history database. The database contains thousands of records. ...Refer to Exercise 20. You have a random sample of 100 population members from each of two populations. You intend to use sample results to test the following hypotheses: H0: μ1 – μ2 < 0 Ha: μ1 – μ2 > 0 a. Compute ...Post your question

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