Solve the problem A study of the amount of time it takes a

Last updated: 12/8/2023

Solve the problem A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8 4 hours and the standard deviation is 1 8 hours If 40 mechanics are randomly selected find the probability that their mean rebuild time exceeds 7 7 hours O 0 9634 O 0 9931