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(Solution Library) 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,

Question: 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.

Construct a 95 percent confidence interval for the population proportion of positive drug tests.
Why is the normality assumption not a problem, despite the very small value of p ?

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(Solution Library) 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,

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