Question: 21. For the standard normal random variable z, compute the following probabilities: a. P(0 ? z ? 0.83) b. P(?1.57 ? z ? 0) c.

21. For the standard normal random variable z, compute the following probabilities:

a. P(0 ? z ? 0.83)

b. P(?1.57 ? z ? 0)

c. P(z ? 0.44)

d. P(z ?20.23)

e. P(z ? 1.20)

f. P(z ?20.71)

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