The owner of two restaurants asked you to determine whether the variances of the number of customers differ in two locations. you collect daily data about the total number of customers in both restaurants. a sample of 20 days from restaurant 1 had the standard deviation 29, while a sample of 23 days from restaurant 2 had the standard deviation of 20. given the way the populations are labeled, the test statistic is: a. 1.50 b. 2.10 c. 0.67 d. 1.56