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 500 pages. To test this claim, an independent lab measured the page count of45 cartridges and found the average page count to be 488.7 Assume the standard deviation for this population is 44. 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

given claim : black ink cartridge will yield 500 pages.

if the value 500 lies between the lower limit and upper limit of the interval , we can support the claim

answer with steps given below.