Carver Memorial Hospital's Surgeons Have a New Procedure That They

Multiple Choice

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 variance of 16 minutes. For a right-tailed test of means (assume equal variances) , the test statistic is:

A) 3.814
B) 2.365
C) 3.000
D) 1.895