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MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A stratified simple random sample was taken with the following results. Excel File: data21-07.xls Stratum (h) Sh Ph NA 1 138 30 0.50 200 20 2 103 25 0.78 250 30 3 210 50 0.21 100 25 a. Develop an estimate of the population mean for each stratum. Stratum 1 138 Stratum 2 103 Stratum 3 210 b. Develop an approximate 95% confidence interval for the population mean in each stratum (to 4 decimals). Stratum 1 125.2720 to 150.7280 Stratum 2 94.4366 to 111.5634 Stratum 3 192.6794 to 227,3206 c. Develop an approximate 95% confidence interval for the overall population mean (to 4 decimals). to
Transcribed Image Text:A stratified simple random sample was taken with the following results. Excel File: data21-07.xls Stratum (h) Sh Ph NA 1 138 30 0.50 200 20 2 103 25 0.78 250 30 3 210 50 0.21 100 25 a. Develop an estimate of the population mean for each stratum. Stratum 1 138 Stratum 2 103 Stratum 3 210 b. Develop an approximate 95% confidence interval for the population mean in each stratum (to 4 decimals). Stratum 1 125.2720 to 150.7280 Stratum 2 94.4366 to 111.5634 Stratum 3 192.6794 to 227,3206 c. Develop an approximate 95% confidence interval for the overall population mean (to 4 decimals). to
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