Question: 3 Suppose Z is a standard normal variable; that is, Z~N (0, 1). Find the following probabilities: 3.1. ; P Z 1.4 3.2. 3.3. 3.4.

3 Suppose Z is a standard normal variable; that is, Z~N (0, 1). Find the following probabilities: 3.1. ; P Z 1.4 3.2. 3.3. 3.4. P 2.5 Z 2.2 ; P 1.5 Z 1.1 P Z 4.1 ; and . QUESTION 4 Suppose X is a normal variable with mean following probabilities: 4.1. ; P X 30 4.2. 4.3. 4.4. P X 45 ; P 30 X 50 P X 35 . ; and and standard deviation . Find the

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