The formula used to compute a large-sample confidence interval for p is p^ 6 1z critical value2

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The formula used to compute a large-sample confidence interval for p is p^ 6 1z critical value2

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p^ 11 2 p^2 n

What is the appropriate z critical value for each of the following confidence levels?

a. 95%

d. 80%

b. 90%

e. 85%

c. 99%

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