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 PH_Stat.

c. Interpret the p value obtained from the software.

Transcribed Image Text:

Cape May Camden 27 Sample size Sample standard deviation 6,300 $5.200 30