Question: Please answer the question below. l. (15 points) According to a recent government survey, the daily one-way commuting distance of U. S. workers averages 13

Please answer the question below.

l. (15 points) According to a recent government survey, the daily one-way commuting distance of U. S. workers averages 13 miles with a standard deviation of 13 miles. An investigator wishes to determine whether the national average describes the mean commute distance for all workers in the Chicago area. Commute distances are obtained for a random sample of 168 workers from this area, and the mean distance is found to be 10.5 miles. Test the null hypothesis at the .05 level of signicance. A. What is the research problem? B. State H]: C. State HA: D. Is this a one- or twotail test? Why? E. What is/are the critical value(s)? F. What is the decision rule? G. Calculate the statistic (below): Formula: Z = X l; o/X H. What is your decision regarding H\" and why? 1. Interpretation of the results

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