SOLUTION: Suppose the weights of packages of lettuce coming off a packaging line have a normal distribution with mean 8.5 ounces and standard deviation 0.9 ounce. If every package is labeled

Algebra ->  Probability-and-statistics -> SOLUTION: Suppose the weights of packages of lettuce coming off a packaging line have a normal distribution with mean 8.5 ounces and standard deviation 0.9 ounce. If every package is labeled      Log On


   

Question 1045359: Suppose the weights of packages of lettuce coming off a packaging line have a normal distribution with mean 8.5 ounces and standard deviation 0.9 ounce. If every package is labeled 10.3 ounces, what proportion of the packages weigh less than the labeled amount?
% (Round to the whole.)
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
z+=blue+%28x+-+mu%29%2Fblue%28sigma%2Fsqrt%28n%29%29 = (10.3 - 8.5)/.9 = 2
P(x < 10.3) = P(z < 2) = =NORMSDIST(2) = .9972 0r 99.72%