# Reconsider the sample results in exercise 7. a. Develop an approximate 95% confidence interval for the proportion in each stratum.

## Question:

Reconsider the sample results in exercise 7.

a. Develop an approximate 95% confidence interval for the proportion in each stratum.

b. Develop a point estimate of the population proportion for the 550 elements in the population.

c. Estimate the standard error of the population proportion.

d. Develop an approximate 95% confidence interval for the population proportion.

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**Related Book For**

## Statistics For Business & Economics

**ISBN:** 9781285846323

12th Edition

**Authors:** David Anderson, Dennis Sweeney, Thomas Williams, Jeffrey Camm, James Cochran

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