A random sample of 56 fluorescent light bulbs has a mean

Last updated: 4/26/2023

A random sample of 56 fluorescent light bulbs has a mean life of 645 hours and assume that the population standard deviation is 31 hours Construct a 95 confidence interval for the population mean OA 636 9 653 1 O B 112 0 118 9 OC 539 6 551 2 OD 712 0 768 0 ACCES