Question

The cost of ink cartridges for inkjet printers can be substantial over the life of a printer. Printer manufacturers publish the number of pages that can be printed from an ink cartridge in an effort to attract customers. A company claims that its black ink cartridge will yield 495 pages. To test this​ claim, an independent lab measured the page count of 47 cartridges and found the average page count to be 485.8 Assume the standard deviation for this population is 46. Using a 95​% confidence​ interval, does this sample support the​ company's claim?

Select the correct choice​ below, and fill in the answer boxes to complete your choice.

​(Round to two decimal places as​ needed.)

A. No, because the​ company's claim is not between the lower limit of ______ pages and the upper limit of ____ pages for the average number of pages yielded by a single black cartridge.

B. Yes, because the​ company's claim is between the lower limit of ____ pages  and the upper limit of _____ pages for the average number of pages yielded by a single black cartridge.

Answer 1

TOPIC:Confidence interval for the population mean.