Mathematics, 17.12.2019 07:31, neariah24

The time t that technician requires to perform preventive maintenance on an air conditioning unit has an unknown probability distribution. however, its mean is known to be 2 hours, with standard deviation 1 hour. suppose the company maintains 70 of these units and that the conditions of the central limit theorem apply. what is the probability that a maintenance operation will take more than 2 hours and 15 minutes?

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The time t that technician requires to perform preventive maintenance on an air conditioning unit ha...