The life of a gas grill is 3.5 years with a standard deviation 0.35 years. What is the probability that the grill will last less than 3 years?
+36916 3 years is how many standard deviations away from 3.5 ?? .5 / .35 = 1.43 standard deviations below the mean====> z-score table = - 1.43
from the negative z-score table this represents .0764 or 7.64 %
