Question: A large number of U.S. companies test prospective employees for drugs, and approximately 5% of those prospective employees test positive (approximately based on data from the American Management Association).  If a company tests 120 prospective employees,

Answer the following:

1. To calculate the probability that of the 120 prospective employees to be tested that 10 or more will test positive, what is the correction that should be made to the 10 in order to approximate this probability using the normal distribution?  If this question does not make sense, then go ahead and calculate the probability that of the 120 prospective employees, 10 or more test positive.
2. Why can the normal distribution be used to approximately probability requested above?

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