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OpenStudy (anonymous):
The heights of a certain group of adult males was found to be normally distributed. The mean height is 170 cm with a standard deviation of 6 cm. In a group of 1200 of these males, about how many would be more than 164 cm tall?
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OpenStudy (kira_yamato):
X ~ N(170, 6) Find P(X > 164) = p. Then you have a Binomial Y ~ Bin (1200 , p)
OpenStudy (kira_yamato):
Find E(Y)
OpenStudy (anonymous):
how do you find E(Y)?
OpenStudy (kira_yamato):
E(Y) = 1200p
OpenStudy (anonymous):
I dont get it... Can you give me an example like this and solve it? :\
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