Carver Memorial Hospital's surgeons have a new procedure that they think will decrease the time to perform an appendectomy.
A sample of 8 appendectomies using the old method had a mean of 38 minutes with a variance of 36 minutes, while a sample of 10 appendectomies using the experimental method had a mean of 29 minutes with a standard deviation of 16 minutes.
A) For the hypothesis H1: μOld > μNew; assuming unequal variances at α = .05, the test statistic is .