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Jobs and productivity! How do retail stores rate? One way to answer this question is to examine annual profits per employee. The following data give annual profits per employee (in units of 1 thousand dollars per employee) for companies in retail sales. Assume o 3.5 thousand dollars. 3.6 6.9 3.6 8.2 7.8 5.3 8.3 6.3 -1.2 4.3 2.7 5.7 (a) Find x for the preceding data. (Round your answer to two decimal places.) thousand dollars per employee (b) Let us say that the preceding data are representative of the entire sector of retail sales companies. Find an 80% confidence interval for u, the average annual profit per employee for retail sal (Round your answers to two decimal places.) lower limit thousand dollars upper limit thousand dollars (c) Find an 95% confidence interval for u, the average annual profit per employee for retail sales. (Round your answers to two decimal places.) lower limit thousand dollars. upper limit thousand dollars

Jobs and productivity! How do retail stores rate? One way to answer this question is to examine annual profits per employee. The following data give annual profits per employee (in units of 1 thousand dollars per employee) for companies in retail sales. Assume o 3.5 thousand dollars. 3.6 6.9 3.6 8.2 7.8 5.3 8.3 6.3 -1.2 4.3 2.7 5.7 (a) Find x for the preceding data. (Round your answer to two decimal places.) thousand dollars per employee (b) Let us say that the preceding data are representative of the entire sector of retail sales companies. Find an 80% confidence interval for u, the average annual profit per employee for retail sal (Round your answers to two decimal places.) lower limit thousand dollars upper limit thousand dollars (c) Find an 95% confidence interval for u, the average annual profit per employee for retail sales. (Round your answers to two decimal places.) lower limit thousand dollars. upper limit thousand dollars

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
6th Edition
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Bruce Crauder, Benny Evans, Alan Noell
Chapter1: Functions
Section1.2: Functions Given By Tables
Problem 3E: Box Office Hits The table below shows the highest grossing movie of the given year. The amount is...
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Jobs and productivity! How do retail stores rate? One way to answer this question is to examine annual profits per employee. The following data give annual profits per employee (in units of 1 thousand dollars per employee) for companies in retail sales. Assume o 3.5 thousand dollars. 3.6 6.9 3.6 8.2 7.8 5.3 8.3 6.3 -1.2 4.3 2.7 5.7 (a) Find x for the preceding data. (Round your answer to two decimal places.) thousand dollars per employee (b) Let us say that the preceding data are representative of the entire sector of retail sales companies. Find an 80% confidence interval for u, the average annual profit per employee for retail sales (Round your answers to two decimal places.) lower limit thousand dollars upper limit thousand dollars (c) Find an 95% confidence interval for u, the average annual profit per employee for retail sales. (Round your answers to two decimal places.) lower limit thousand dollars upper limit thousand dollars
Transcribed Image Text:Jobs and productivity! How do retail stores rate? One way to answer this question is to examine annual profits per employee. The following data give annual profits per employee (in units of 1 thousand dollars per employee) for companies in retail sales. Assume o 3.5 thousand dollars. 3.6 6.9 3.6 8.2 7.8 5.3 8.3 6.3 -1.2 4.3 2.7 5.7 (a) Find x for the preceding data. (Round your answer to two decimal places.) thousand dollars per employee (b) Let us say that the preceding data are representative of the entire sector of retail sales companies. Find an 80% confidence interval for u, the average annual profit per employee for retail sales (Round your answers to two decimal places.) lower limit thousand dollars upper limit thousand dollars (c) Find an 95% confidence interval for u, the average annual profit per employee for retail sales. (Round your answers to two decimal places.) lower limit thousand dollars upper limit thousand dollars
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