Question

A researcher in sports equipment is investigating the design of racing swimsuits for women. The researcher selected a samp The difference in the sample mean swim times will be calculated. Which of the following is the appropriate inference procedure for analyzing the results?

a) A two-sample t-interval for a difference between sample means
b) A two-sample t-interval for a difference between population means
c) A one-sample t-interval for a sample mean
d) A one-sample t-interval for a population mean
e) A matched pairs t-interval for a mean difference

Answer 1

b) A two-sample t-interval for a difference between population means

Explanation:

Answer 2

Answer: B. A two sample t-interval for a difference between population means.

Explanation:

The appropriate inference procedure for analyzing the results is the two sample t-interval for a difference between population means.

The two-sample T-interval is simply used in the estimation of the difference that occurs in two population means. Since two independent groups mean are being considered, the appropriate test will then be two sample t-interval for a difference between population means