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Suppose you are interested in studying regional differences in crime rates.  You take a random sample of 100 cities in the South, and find a mean crime rate of 55 with a sample variance of 5.78.  A sample of 100 cities in the North has a mean crime rate of 50 with a sample variance of 6.72.   Test the null hypothesis that the mean crime rate for the population of cities in the South is less than (or equal to) the mean crime rate for the population of cities in the North.  Use a significance level of .01.

Suppose you are interested in studying regional differences in crime rates.  You take a random sample of 100 cities in the South, and find a mean crime rate of 55 with a sample variance of 5.78.  A sample of 100 cities in the North has a mean crime rate of 50 with a sample variance of 6.72.   Test the null hypothesis that the mean crime rate for the population of cities in the South is less than (or equal to) the mean crime rate for the population of cities in the North.  Use a significance level of .01.

MATLAB: An Introduction with Applications
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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Suppose you are interested in studying regional differences in crime rates.  You take a random sample of 100 cities in the South, and find a mean crime rate of 55 with a sample variance of 5.78.  A sample of 100 cities in the North has a mean crime rate of 50 with a sample variance of 6.72.  

Test the null hypothesis that the mean crime rate for the population of cities in the South is less than (or equal to) the mean crime rate for the population of cities in the North.  Use a significance level of .01.

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