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Mathematics, 24.12.2019 05:31 highschoolkid621
The average life of a bread-making machine is 7 years, with a standard deviation of 1 year. assuming that the lives of these machines follow approximately a normal distribution, find the probability that the mean life of a random sample of 9 such machines
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The average life of a bread-making machine is 7 years, with a standard deviation of 1 year. assuming...
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