An economist found that a random sample of 45 high school teachers had an average annual salary of $58,230. A previous study showed that the population standard deviation is $4450. Find the 90% confidence interval for µ, the average annual salary of all high school teachers. A. (54607.2 , 58372.8) B. (56929.8 , 59530.2) C. (54837.9 , 58142.1) D. (57138.3 , 59321.2)

An economist found that a random sample of 45 high school teachers had an average annual salary of $58,230. A previous study showed that the population standard deviation is $4450. Find the 90% confidence interval for µ, the average annual salary of all high school teachers. A. (54607.2 , 58372.8) B. (56929.8 , 59530.2) C. (54837.9 , 58142.1) D. (57138.3 , 59321.2)

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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