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Jobs and productivity! How do banks rate? One way to answer this question is to examine annual profits per employee. The following is data about annual profits per employee (in units of one thousand dollars per employee) for representative companies in financial services. Assume σ ≈ 10.7 thousand dollars. 50.9 25.7 46.7 48.1 50.2 34.1 36.2 41.8 42.5 33.0 33.6 36.9 27.0 47.1 33.8 28.1 28.5 29.1 36.5 36.1 26.9 27.8 28.8 29.3 31.5 31.7 31.1 38.0 32.0 31.7 32.9 23.1 54.9 43.8 36.9 31.9 25.5 23.2 29.8 22.3 26.5 26.7 (e) Find a 90% confidence interval for μ, the average annual profit per employee for all successful banks. (Round your answers to two decimal places.) lower limit     thousand dollars upper limit     thousand dollars

Jobs and productivity! How do banks rate? One way to answer this question is to examine annual profits per employee. The following is data about annual profits per employee (in units of one thousand dollars per employee) for representative companies in financial services. Assume σ ≈ 10.7 thousand dollars. 50.9 25.7 46.7 48.1 50.2 34.1 36.2 41.8 42.5 33.0 33.6 36.9 27.0 47.1 33.8 28.1 28.5 29.1 36.5 36.1 26.9 27.8 28.8 29.3 31.5 31.7 31.1 38.0 32.0 31.7 32.9 23.1 54.9 43.8 36.9 31.9 25.5 23.2 29.8 22.3 26.5 26.7 (e) Find a 90% confidence interval for μ, the average annual profit per employee for all successful banks. (Round your answers to two decimal places.) lower limit     thousand dollars upper limit     thousand dollars

Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter4: Eigenvalues And Eigenvectors
Section4.6: Applications And The Perron-frobenius Theorem
Problem 22EQ
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Jobs and productivity! How do banks rate? One way to answer this question is to examine annual profits per employee. The following is data about annual profits per employee (in units of one thousand dollars per employee) for representative companies in financial services. Assume σ ≈ 10.7 thousand dollars.

50.9 25.7 46.7 48.1 50.2 34.1 36.2 41.8 42.5 33.0 33.6
36.9 27.0 47.1 33.8 28.1 28.5 29.1 36.5 36.1 26.9 27.8
28.8 29.3 31.5 31.7 31.1 38.0 32.0 31.7 32.9 23.1 54.9
43.8 36.9 31.9 25.5 23.2 29.8 22.3 26.5 26.7

(e) Find a 90% confidence interval for μ, the average annual profit per employee for all successful banks. (Round your answers to two decimal places.)

lower limit     thousand dollars
upper limit     thousand dollars
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