Question: The mean driving distance on the PGA Tour in the year 2009 was 278 yards. It is believed that driving distance has increased this year according to golf analysts. A random sample of 25 Tour players was taken and produced a sample mean of 286 yards with a standard deviation of 10 yards.

a. State an appropriate alternate hypothesis

b. Is the sampling distribution of xbar normally distributed?

c. At a 95% confidence what is the value of the test statistic?

d. What is the critical value?

e. What is your conclusion concerning the null hypothesis