12. Jim Ray, an avid golfer, keeps records on his scores for 18 holes of golf. When the temperature is above 65 degrees, the standard deviation of his scores is 5.75 for 25 rounds. When the...

Extracted text: 12. Jim Ray, an avid golfer, keeps records on his scores for 18 holes of golf. When the temperature is above 65 degrees, the standard deviation of his scores is 5.75 for 25 rounds. When the temperature is below 65 degrees, the standard deviation of his scores is 7.35 for a sample of 21 rounds. At the 0.05 significance level, is there more variation in his scores when the temperature is below 65 degrees? a. State the null and alternate hypotheses. Ho: H1: b. State the decision rule. Analysis of Variance 248 Chapter 12


Extracted text: c. Compute the value of the test statistic. с. Thy A d. What is your decision regarding the null hypothesis? Interpret the result.