a. Find the area under the standard normal curve that lies between z=-1.11 and 3.21. Round...

Question

Question

Answer 1

Answer #1

(a)

To find P(-1.11 < Z < 3.21);

For Z = - 1.11:

By Technology, Cumulative Area Under Standard Normal Curve = 0.1335

For Z = 3.21:

By Technology, Cumulative Area Under Standard Normal Curve = 0.9993

So,

P(-1.11 < Z < 3.21); = 0.9993 - 0.1335 =0.8658

Answer is:

0.8658

(b)

By Technology, Z score corresponding to Cumulative Area Under Standard Normal Curve = 0.54 is Z = 0.10

Answer is:

0.10

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Answer 2

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