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1. It is found that there are 6 fatal accidents in an underground coal mine for a sample of 20,000,000 employee hours of exposure. Place an approximate 80% confidence interval on the Poisson parameter if the interval is 100,000 employee hours.

2. In the quality control process described in place an approximate 90% confidence interval on the smallest mean number of pellets expected in 1 scoop if 7 pellets are found in 4 random scoops.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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