Consider the one-sided confidence interval expressions for

Chapter 8, Problem 3E

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QUESTION:

Consider the one-sided confidence interval expressions for a mean of a normal population.

(a) What value of \(z_{\alpha}\) would result in a 90% CI?

(b) What value of \(z_{\alpha}\) would result in a 95% CI?

(c) What value of \(z_{\alpha}\) would result in a 99% CI?

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QUESTION:

Consider the one-sided confidence interval expressions for a mean of a normal population.

(a) What value of \(z_{\alpha}\) would result in a 90% CI?

(b) What value of \(z_{\alpha}\) would result in a 95% CI?

(c) What value of \(z_{\alpha}\) would result in a 99% CI?

ANSWER:

Step 1 of 5

For a sample mean, , of a random sample of size n from a normal population with known variance , a  Confidence Interval on  is given by,

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