Find each probability using the standard normal

Chapter , Problem 1CQ

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QUESTION:

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)

Questions & Answers

QUESTION:

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)

ANSWER:

Solution:

Step 1 of 5:

Let X follows the Normal distribution with density

P(X = x) =

With parameters  and

Test statistic, z =


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