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

Letzbe a random variable with a standard normal distribution. Find the indicated probability. (Round your answer to four decimal places.)

P(z1.28) =

Letzbe a random variable with a standard normal distribution. Find the indicated probability. (Round your answer to four decimal places.)

P(z1.28) =

Letzbe a random variable with a standard normal distribution. Find the indicated probability. (Round your answer to four decimal places.)

P(1.82z1.23) =

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

=39;=15

P(50x70) =

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

=113;=18

P(x90) =

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