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Finding Critical Values. In Exercises 58, find the indicated critical z value. Find the

Chapter 7, Problem 5

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QUESTION:

Finding Critical Values. In Exercises 58, find the indicated critical z value. Find the critical value z / 2 that corresponds to a confidence level of 80%.

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QUESTION:

Finding Critical Values. In Exercises 58, find the indicated critical z value. Find the critical value z / 2 that corresponds to a confidence level of 80%.

ANSWER:

Step 1 of 2

 is 1 decreased by the confidence level:

Then we obtain:

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