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Math Help - Criminal Stats

  1. #1
    Apr 2010
    Help with a couple problems.

    Police departments are increasingly becoming more diverse. In a randomly selected police department, there were 100 officers in 1980 and 120 officers in 1995. The proportion of female officers in the police department increased from 9% in 1980 to 17% in 1995. Using an alpha of .01, determine whether this is a significant difference.

    a. Write a paragraph summarizing the results
    b. What criticisms would you make about the analysis, measure, or results.

    How do I find a p-value? How do I find the sample size. Do I just average the populations of the individuals with the 15 years in between?
    Last edited by mr fantastic; April 19th 2010 at 01:18 AM. Reason: Merged posts
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