Question: Let z be a standard normal random variable. What is the probability that z is at most .5? a) 0.4332 b) 0.1915 c) 0.4772 d)

Let z be a standard normal random variable. What is the probability that z is at most .5?

a)

0.4332

b)

0.1915

c)

0.4772

d)

0.3413

e)

0.6915

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