Mathematics, 14.02.2020 18:04 katerrickt
From his stock of engines, the inventor selects a simple random sample of 50 engines for testing. The engines run for an average of 305 minutes. The true standard deviation is known and is equal to 30 minutes, and the run times of the engines are normally distributed. In R-studio, test the hypothesis that the mean run time is more than 300 minutes. Use a 0.01 level of significance.
Answers: 3
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From his stock of engines, the inventor selects a simple random sample of 50 engines for testing. Th...
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