Author Question: A major electronics store chain is interested in estimating the average amount its credit card ... (Read 82 times)

bucstennis@aim.com · **on:** Jun 24, 2018

A major electronics store chain is interested in estimating the average amount its credit card customers spent on their first visit to the chain's new store in the mall. Fifteen credit card accounts were randomly sampled and analyzed with the following results: x = 50.50 and s2 = 400 . A 95 confidence interval for the average amount the credit card customers spent on their first visit to the chain's new store in the mall is:
a. 50.50 9.09 c. 50.50 11.08.
b. 50.50 10.12 d. None of these choices.

Question 2

The Kruskal-Wallis test can be used to determine whether a difference exists between two populations. However, to determine whether one population location is larger than another, we must apply the Wilcoxon rank sum test.
Indicate whether the statement is true or false