Question: Find the following probabilities based on the standard normal variable Z. a. P(-0.67 Z 20.23) b. P (0 Z 1.96) c.

Find the following probabilities based on the standard normal variable Z.
a. P(-0.67 ≤ Z ≤ 20.23)
b. P (0 ≤ Z ≤ 1.96)
c. P(-1.28 ≤ Z ≤ 0)
d. P (Z <4.2)

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