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Assume that the height of an American female is Normal with expected value μ = 64 and standard deviation σ = 2.5.
a. What is the probability that an American female s height is 66 inches or taller?
b. The heights of 10 American females are measured (in inches). Let Y be the number of the 10 females whose height is 66 inches or taller. Find P(Y = 7). What is the distribution of Y? |
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