Kizspy | Question: 103
(Choose 1 answer)
A study of the amount of time it take 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 8.7 hours.
Let P(Z<0.86) = 0.8054, P(Z < 1.05) = 0.8531, P(Z < 1.10) = 0.8654, P(Z < 1.13) 0.8715.
A. 0.1346
B. 0.1946
C. 0.1469
D. 0.1285
E. None of the other choices is correct
