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Asked Nov 25, 2019
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Let Z be the standard normal variable. Find z if P(-z < Z < z) = 0.8788. (Give your answer to two decimal places.)

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P(-z<Z<z) 0.8788 P(Z <-z or Z> z) =1-0.8788 P(Z-2)P(Z>z)= 0.1212 2P(Z < z) 0.1212 0.1212 P(Z <-z)= 2 P(Z<-z) 0.0606

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