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
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 492pages. To test thisclaim, an independent lab measured the page count of 54cartridges and found the average page count to be 488.2.Assume the standard deviation for this population is 46.Using a 95%confidenceinterval, does this sample support thecompany's claim?
Select the correct choicebelow, and fill in the answer boxes to complete your choice. (Round to two decimal places asneeded.)
A .No, because thecompany's claim isnot between the lower limit of___page and the upper limit of___pages for the average number of pages yielded by a single black cartridge.
B.Yes, because thecompany's claim isbetween the lower limit of___pages and the upper limit of_____ pages for the average number of pages yielded by a single black cartridge. (EXCEL , THANKS)
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