Question: 13. Given that z is a standard normal random variable, compute the following probabilities. a. P(1.98 z .49) b. P(.52 z 1.22) c. P(1.75 z

13. Given that z is a standard normal random variable, compute the following probabilities.

a. P(1.98 z .49)

b. P(.52 z 1.22)

c. P(1.75 z 1.04)

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