Problem 1CQ

Find each probability using the standard normal distribution.

(a) P(z > -2.54)

(b) P(z<3.09)

(c) P(-0.88<z<0.88)

(d) P(z<-1.445 or z > -0.715)

Solution:

Step 1 of 5:

Let X follows the Normal distribution with density

P(X = x) =

With parameters and

Test statistic, z =