Answered: study was made to estimate the…

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 study was made to estimate the difference in salaries of college professors in the private and state
colleges of Virginia. A random sample of 100 professors in private colleges showed an average
salary of $25000 with a standard deviation of $1200. A random sample of 200 professors in state
colleges showed an average salary of $26000 with a standard deviation of $1400. Find a 95%
confidence interval for the difference between the average salaries of professors teaching in state and
private colleges of Virginia.

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