Answer to Question #21240 in Statistics and Probability for francisco maella
E(X) = 8
SE(X) = standev/sqrt(n) = .1/sqrt(30) = 0.0183
the solution then says that P(X<7.8) = P(Z<-8.2) = 0, thus the cannery is not telling the truth
my question is an explation on how we get from SE(X) to the P(X<7.8) = P(Z<-8.2)
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thanks a lot for the answer