A: Let z be a random variable with a standard normal distribution. Find the indicated probability....

A: Let z be a random variable with a standard normal distribution. Find the indicated probability. (Round your answer to four decimal places.)
P(z ≤ 1.23) =

B: Let z be a random variable with a standard normal distribution. Find the indicated probability. (Round your answer to four decimal places.)

P(z ≥ −1.13) =

C: Let z be a random variable with a standard normal distribution. Find the indicated probability. (Round your answer to four decimal places.)

P(−1.87 ≤ z ≤ −1.24) =

D: Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.)

μ = 42; σ = 15

P(50 ≤ x ≤ 70) =

E: Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.)

μ = 108; σ = 18

P(x ≥ 90) =

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Expert Solution

orchestra answered 1 year ago

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