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Peace
Lv 5
normal distribution probability equation?
mean = 50
standard deviation = 4
whats the probability that X IS GREATHER THAN 43
I know the z score is -1.75
but how is the answer 0.9599?
1 Answer
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- AlanLv 76 years agoFavorite Answer
Remember the Z table
returns value for P(X<x)
if you want P(X>x) = 1 - P(X<x)
P(X<43) = Z(-1.75) = .04006
P(X> 43) = 1 - (Z<-1.75) = 1 - .04006 = 0.95994
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