Question

The New Jersey teacher’s union would like to see if there is a difference in the variability of the salaries earned by high school teachers in Cape May County as compared with those in Camden County. A random sample of teacher salaries from each county was selected, and the standard deviation of each sample was calculated. The data are as follows:
a. Using α = 0.05, determine if there is a difference in the variability of the salaries for the two populations.
b. Verify your results using PHStat.
c. Interpret the p value obtained from the software.


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  • CreatedJuly 28, 2015
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