Based on the provided information, here is the main answer to your question:
To compare the driving distances of the current and new golf balls, you need to run a t-test: two-sample assuming unequal variances for the data file "golf" in Chapter 10. Follow the steps in the video "How to Add Excel's Data Analysis ToolPak" for assistance.
In your managerial report, use hypothesis testing methods to formulate and present the rationale for a hypothesis test. Analyze the data to provide a hypothesis testing conclusion. The p-value for your test will indicate the statistical significance of the results.
Based on the conclusion drawn from the hypothesis test, you can make recommendations for Par, Inc. These recommendations should be supported by the findings from your managerial report.
Additionally, provide descriptive statistical summaries of the data for each model, including the population mean driving distance and the 95% confidence interval for each model's driving distance. Also, calculate the 95% confidence interval for the difference between the means of the two populations.
Discuss whether there is a need for larger sample sizes and more testing with the golf balls, based on your analysis. Consider the limitations of the current sample size and the potential benefits of increasing it.
In conclusion, your recommendations for Par, Inc. should be based on the hypothesis testing conclusion and the findings from your managerial report.