Question

The cost of ink cartridges for inkjet printers can be substantial over the life of a printer. Printer manufacturers publish the ink cartridge will yield an average 2,326 pages. To test this claim, an independent lab measured the page count of 50 car parts a and b. a. Create a 95% confidence interval. (Round to two decimal places as needed.) b. Does this sample support the company's claim? Choose the correct answer below. O A. Yes, because the company's claim is between the limits of the confidence interval for the average number of pages O B. Yes, because the company's claim is not between the limits of the confidence interval for the average number of pa OC. No, because the company's claim is between the limits of the confidence interval for the average number of pages OD. No, because the company's claim is not between the limits of the confidence interval for the average number of pag

Answer 1

The average yield of black ink cartrige (M) = 2326 pages. Sample size (n)=50 The op average yield of black in cartrige forom the same of size n=50 is ñ = 2.273,4 The standard deviation of the population , &=213, The 95% confidence interval of free population mean is ntz 1-005 /m [. We know the population standard deviation = 2273.4+1.96 x 213 150 = 2273.4+59.04 ( 2214.36, 2332.44) 2214.36 < M < 2332,44. the number of pages Ans: Yes because the company's claim is between the limits of the confidence interval for average yielded by cartridge . is the a resage yield of black ink cartrige M = 2326 pages, is between 2214. 36 and single black Note That apopulation 1 2332.44.,