The data from Medicine and Science in Sports and Exercise described in Exercise 8-53 considered ice hockey player performance after electrostimulation training. In summary, there were 17 players, and the sample standard deviation of performance was 0.09 seconds.

(a) Is there strong evidence to conclude that the standard deviation of performance time exceeds the historical value of 0.75 seconds? Use α = 0.05. Find the P-value for this test.

(b) Discuss how part (a) could be answered by constructing a 95% one-sided confidence interval for σ.