The average time spent by col weekends in 7.93 hours (over 2 days). Assume the distribution is approximately normal and has a standard deviation of 0.8 hours. • Find the probability that an individual who works at that trade works fewer than 8 hours on the weekend. If a sample of 40 construction workers is randomly selected, find the probability that the mean of the sample will be less than 8 hours. Workers whO work on

A First Course in Probability (10th Edition)
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Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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The average time spent by construction workers who work on
weekends in 7.93 hours (over 2 days). Assume the distribution is
approximately normal and has a standard deviation of 0.8 hours.
• Find the probability that an individual who works at that trade works
fewer than 8 hours on the weekend.
• Ifa sample of 40 construction workers is randomly selected, find
the probability that the mean of the sample will be less than 8
hours.
Transcribed Image Text:The average time spent by construction workers who work on weekends in 7.93 hours (over 2 days). Assume the distribution is approximately normal and has a standard deviation of 0.8 hours. • Find the probability that an individual who works at that trade works fewer than 8 hours on the weekend. • Ifa sample of 40 construction workers is randomly selected, find the probability that the mean of the sample will be less than 8 hours.
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