Question 1
Solve the problem.
Among a random sample of 150 employees of a particular company, the mean commute distance is
This mean lies 2.7 standard deviation(s) below the mean of the sampling distribution. If a second sample of 150 employees is selected, what is the probability that for the second sample, the mean commute distance will be at least 26.8 miles?
◦ 0.9965
◦ 0.0035
◦ 0.0026
◦ 0.5
Question 2
Solve the problem.
Among a random sample of 150 employees of a particular company, the mean commute distance is 25.4 miles. This mean lies 1.7 standard deviation(s) below the mean of the sampling distribution. In a second sample of 150 employees selected from the same company, the mean commute distance is 31.7 miles. This second sample mean lies 2 standard deviation(s) above the mean of the sampling distribution. If a third sample of 150 employees is selected, what is the probability that the sample mean will lie between 25.4 and 31.7?
◦ 0.0218
◦ 0.9326
◦ 0.0446
◦ 0.9772
Problem Solving
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Looking carefully at the scan tool data is very helpful in locating the source of a problem.
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