SOLUTION: for a normal distribution with a mean of 20 and standard deviation of 5, what percent of the observation will be less than 10
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Question 847866: for a normal distribution with a mean of 20 and standard deviation of 5, what percent of the observation will be less than 10 Answer by swincher4391(1107) (Show Source):
You can put this solution on YOUR website! X~Normal(20,5)
P[X < 10]
standardize our variable to Z
P[Z < (10-20)/5]
P[Z < -2]
1- Pr[Z<2] = 1- .9977= .0023
