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week 3 checkpoint

# week 3 checkpoint - take at least 50 minutes Student...

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1. Question : A study shows that employees that begin their work day at 9:00 a.m. vary their times of arrival uniformly from 8:40 a.m. to 9:30 a.m. The probability that a randomly chosen employee reports to work between 9:00 and 9:10 is: Student Answer: 40% 20% 10% 30% 16.7% Points Received: 0 of 4 Comments: 2. Question : Suppose that the times required for a cable company to fix cable problems in its customers' homes are uniformly distributed between 40 minutes and 65 minutes. What is the probability that a randomly selected cable repair visit will

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Unformatted text preview: take at least 50 minutes? Student Answer: .77 .40 .60 .23 Instructor Explanation: Points Received: 0 of 4 Comments: 3. Question : The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.2 inches. What is the probability that a sheet selected at random will be less than 29.75 inches long? Student Answer: .8944 * Times are displayed in (GMT-07:00) Mountain Time (US & Canada)...
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