Par, Inc. Par, Inc. is a leading manufacturer of golf equipment. Par's manager believes that the company's market share will increase with the introduction of a highly durable, cut-resistant golf ball. To this end, Par's research group has been testing a new coating for the balls, designed to give resistance to cuts and provide a product with greater durability. Testing done with the coating has been promising. One of the researchers expressed concern about the effect of the new coating on the ball's travel distance. Par wants the new cut-resistant model to offer a travel distance comparable to today's golf balls. To compare the travel distance of the two types of balls, 40 of each model were subjected to distance tests, which were carried out with a ball-throwing machine in order that the difference between the average flight distances between the two models could be attributed to its different peculiarities. The results of the tests, with the distances expressed to the nearest yard, are presented in the table on the next pag
Par, Inc.
Par, Inc. is a leading manufacturer of golf equipment. Par's manager believes that the company's market share will increase with the introduction of a highly durable, cut-resistant golf ball. To this end, Par's research group has been testing a new coating for the balls, designed to give resistance to cuts and provide a product with greater durability. Testing done with the coating has been promising.
One of the researchers expressed concern about the effect of the new coating on the ball's travel distance. Par wants the new cut-resistant model to offer a travel distance comparable to today's golf balls. To compare the travel distance of the two types of balls, 40 of each model were subjected to distance tests, which were carried out with a ball-throwing machine in order that the difference between the average flight distances between the two models could be attributed to its different peculiarities. The results of the tests, with the distances expressed to the nearest yard, are presented in the table on the next page. These data are found on the book's website. (Current refers to the current balls and New the new ones).
Management report
1. Formulate and justify a hypothesis test that Par can use to compare the travel distances of the current ball and the new ball.
2. Analyze the data to formulate the conclusion of the hypothesis test. What is the p-value of the test? What would you recommend to Par, Inc.?
3. Provide a summary of
4. What is the 95% confidence interval for the population mean of the travel distance of each model, and what is the difference between the means of the two populations?
5. Do you see a need for larger samples and more golf ball testing? Analyze it.
PLEASE, DON'T USE EXCEL
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