Use Statistics>1-Sample Inference>t and select C1 for the sample to perform a hypothesis test for state 1.
Question:
Use Statistics>1-Sample Inference>t and select C1 for the sample to perform a hypothesis test for state 1. Check the field "perform hypothesis test", and enter value 16 into the "hypothesized mean" field. We would like to test H0 : = 16 vs. Ha : < 16. Click on the Options tab and select the alternative "Mean < hypothesized value". The results will be displayed in the session window. Instead of taking the time to perform t-tests one at a time for the 49 remaining states, you are given a printed copy of Minitab output for all 50 states (i.e. C1-C50) for each company at the end of the lab paper. You can see your results for state 1 (C1) match the first row of the output provided, and the following rows contain results for states 2-50, respectively. For the rest of this step, use the provided Minitab output for company A. Check Minitab's work for the state # 10, c10, for company A. Use the values of sample size (n), sample mean ( x ) and sample standard deviation (s) listed on Minitab's output under N, Mean, StDev to calculate the standard error of the sample mean and test statistic using formulas provided below. The null (hypothesized) value of the sample mean in the hypothesis test is 0 16. 4. Sample mean x _________________________ 5. Standard error = s/ n ____________________________________________ 6. Test statistic s n x t / 0 _________________