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Math Help - statistics question I am looking for the answer

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    statistics question I am looking for the answer

    In 1992, the FAA conducted 86,991 pre-employment drug tests on job applicants who were to be engaged in safety and security-related jobs, and found that 1,143 were positive. (a) Construct a 95 percent confidence interval for the population proportion of positive drug tests. (b) Why is the normality assumption not a problem, despite the very small value of p. (Data are from Flying 120, no. 11[November 1993], p. 31.)
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    Quote Originally Posted by lightn2sexy View Post
    In 1992, the FAA conducted 86,991 pre-employment drug tests on job applicants who were to be engaged in safety and security-related jobs, and found that 1,143 were positive. (a) Construct a 95 percent confidence interval for the population proportion of positive drug tests. (b) Why is the normality assumption not a problem, despite the very small value of p. (Data are from Flying 120, no. 11[November 1993], p. 31.)
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    Last edited by mr fantastic; April 22nd 2009 at 01:58 AM.
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