The management of a department store is interested in estimating the difference between the mean credit purchases of customers using the store's credit card versus those customers using a national major credit card. You are given the following information.
Store's Card
Major Credit Card
Sample size64
49
Sample mean$140
$120
Population standard deviation$10
$8
?
A 95% confidence interval estimate for the difference between the average purchases of all customers using the two different credit cards is
A. 13.31 to 16.69.
B. 11.68 to 18.32.
C. 12.22 to 17.78.
D. 16.68 to 23.32.
Answer: D
You might also like to view...
Diane has been abused for the past several years but has not been able to leave Sam. She has gotten caught up in the cycle of abuse. How many stages are there in that cycle?
A. two B. three C. four D. five
When income tax expense for a period is greater than income tax payable the difference will be reported how and on which financial statement?
a. Deferred tax asset and Statement of Cash Flows b. Deferred tax asset and Balance Sheet c. Deferred tax liability and Statement of Cash Flows d. Deferred tax liability and Balance Sheet
Posh Collections introduced a new watch to appeal to upscale consumers. The company will most likely use a(n) ________ strategy
A) market-skimming pricing B) market-penetration pricing C) optional-product pricing D) by-product pricing E) allowance pricing
Email has made business communication inexpensive, virtually instantaneous, and—most important—far less __________
a. interesting b. time consuming c. trustworthy d. reliable