For a standard normal random variable, what z-score has (a) probability 0.175 to the right? (3 decimal places) (b) probability 0.950 to the left? (3 decimal places)
Solution :
(a)
P(Z > z) = 0.175
1 - P(Z < z) = 0.175
P(Z < z) = 1 - 0.175 = 0.825
P(Z < 0.935) = 0.82
z score = 0.935
(b)
P(Z < z) = 0.95
P(Z < 1.645) = 0.95
z score = 1.645
For a standard normal random variable, what z-score has (a) probability 0.175 to the right? (3...
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