a. Explanation Calculation: The stratified simple random sample is drawn. The descriptive statistics for each stratum is given below: Stratum ( h ) x ¯ h s h p ¯ h N h n h 1 138 30 0.50 200 20 2 103 25 0.78 250 30 3 210 50 0.21 100 25 Point estimator of Population total: If x ¯ s t is multiplied N times then the obtained value is the point estimate of population total ( X ) that is, X ^ = N x ¯ s t For stratum 1: X ^ =< b. To determine Find a point estimate of the total for all 550 elements in the population. c. To determine Obtain approximate 95% confidence interval for the population total.

Statistics for Business & Economics, Revised (MindTap Course List)

12th Edition

ISBN: 9781285846323

Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran

Publisher: South-Western College Pub

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Chapter 22.5, Problem 8E

To determine

Find the estimate of population total for each stratum.

To determine

Find a point estimate of the total for all 550 elements in the population.

To determine

Obtain approximate 95% confidence interval for the population total.

Expert Solution & Answer

Chapter 22 Solutions

Statistics for Business & Economics, Revised (MindTap Course List)

Ch. 22.4 - Simple random sampling was used to obtain a sample...Ch. 22.4 - Prob. 2E Ch. 22.4 - Prob. 3E Ch. 22.4 - Prob. 4E Ch. 22.4 - Prob. 5E Ch. 22.4 - Prob. 6E Ch. 22.5 - A stratified simple random sample was taken with...Ch. 22.5 - Prob. 8E Ch. 22.5 - Prob. 9E Ch. 22.5 - Prob. 10E

Ch. 22.5 - A drug store chain has stores in four cities: 38...Ch. 22.5 - Prob. 12E Ch. 22.5 - Prob. 13E Ch. 22.6 - A sample of four clusters is to be taken from a...Ch. 22.6 - A sample of six clusters is to be taken from a...Ch. 22.6 - Prob. 16E Ch. 22.6 - Prob. 17E Ch. 22 - To assess consumer acceptance of a new series of...Ch. 22 - Prob. 19SE Ch. 22 - A quality of life survey was conducted with...Ch. 22 - A U.S. Senate Judiciary Committee report showed...Ch. 22 - Refer again to the data in exercise 21. a. Develop...Ch. 22 - Prob. 23SE Ch. 22 - Prob. 24SE

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Find the estimate of population total for each stratum.

Solution Summary: The author calculates the population total for each stratum by multiplying N times.

Videos

Find the estimate of population total for each stratum.

Find a point estimate of the total for all 550 elements in the population.

Obtain approximate 95% confidence interval for the population total.

Chapter 22 Solutions