Hypothesis Testing: Two-Tail Test and One-Tail Test
Complete the following and include your results and responses in your report :
List the null and alternative hypotheses for the two-tail test for the mean. Calculate the observed value of the test statistic and the associated p-value.
Is the observed test statistic in the critical region? Is the p-value higher or lower than your alpha?
Is the observed test statistic in the critical region? Will the p-value be higher or lower than your alpha?
Conclusions
In your report, use the confidence interval information and the results of the hypothesis testing to provide support for your conclusions and recommendations to the company. Specifically:
What conclusions did you reach? What did you learn about the situation by using each method? Did one method offer more conclusive proof than another?
Based on your results, do you support the company’s claim that their minivans get 28 miles per gallon?
Summarize the details of your test methods and the results from each statistical method you used. Explain the findings so that executives from both the agency and the company can understand your conclusion.
