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The personnel office at a large electronics firm regularly schedules job interviews and maintains records of the interviews. From the past records, they have found that the length of a first interview is normally distributed, with mean μ = 39 minutes and standard deviation σ = 8 minutes. (Round your answers to four decimal places.)
a) What is the probability that a first interview will last 40 minutes or longer?
b) Eighteen first interviews are usually scheduled per day. What is the probability that the average length of time for the eighteen interviews will be 40 minutes or longer?
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Determine a 99% confidence interval for mean pH in rainfall. How would you distinguish interval?
Robinson & Associates performs employment screening for large companies in southern California. It usually follows two-step process. First potential applicants are given a test that covers basic knowledge and intelligence. If applicants score b..
Use a test of the difference between proportions when answering these questions.
State the null and alternative hypotheses you would use to test whether the year-end bonuses paid by Jones & Ryan were different from the population mean.
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Determine the optimum solution for the problem.
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