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A survey is planned to compare salaries of plant managers in two regions. The plan is to take a sample of 400 plant managers from each region and ask their annual salaries. Assume that previous sample statistics suggest that 0102 = $4000. Are the sample sizes sufficient to produce a 95% confidence interval on μ₁-μ₂ having a width of only $1000? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. The sample sizes sufficient because the samples would need to be at least people each, which is the planned sample sizes of 400. t whole number as needed.) greater than less than

A survey is planned to compare salaries of plant managers in two regions. The plan is to take a sample of 400 plant managers from each region and ask their annual salaries. Assume that previous sample statistics suggest that 0102 = $4000. Are the sample sizes sufficient to produce a 95% confidence interval on μ₁-μ₂ having a width of only $1000? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. The sample sizes sufficient because the samples would need to be at least people each, which is the planned sample sizes of 400. t whole number as needed.) greater than less than

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 31PPS
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A survey is planned to compare salaries of plant managers in two regions. The plan is to take a sample of 400 plant managers from each region and ask their annual salaries. Assume that previous sample statistics suggest that 0₁ = 02 = $4000. Are the sample sizes sufficient to produce a 95% confidence interval on μ₁-μ₂ having a width of only $1000? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. The sample sizes sufficient because the samples would need to be at least people each, which is the planned sample sizes of 400. t whole number as needed.) greater than less than
Transcribed Image Text:A survey is planned to compare salaries of plant managers in two regions. The plan is to take a sample of 400 plant managers from each region and ask their annual salaries. Assume that previous sample statistics suggest that 0₁ = 02 = $4000. Are the sample sizes sufficient to produce a 95% confidence interval on μ₁-μ₂ having a width of only $1000? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. The sample sizes sufficient because the samples would need to be at least people each, which is the planned sample sizes of 400. t whole number as needed.) greater than less than
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