The financial manager of a large department store chain
Chapter 7, Problem 7.51(choose chapter or problem)
The financial manager of a large department store chain selected a random sample of 200 of its credit card customers and found that 136 had incurred an interest charge during the previous year because of an unpaid balance. a. Compute a 90% CI for the true proportion of credit card customers who incurred an interest charge during the previous year. b. If the desired width of the 90% interval is .05, what sample size is necessary to ensure this? c. Does the upper limit of the interval in part (a) specify a 90% upper confidence bound for the proportion being estimated? Explain
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer