Mathematics, 15.11.2019 18:31, AADJ4

The employees in certain division of cybertronics inc. need to complete a certification online. on average, it takes 20 hours to complete the coursework and successfully pass all tests, and the standard deviation is 6 hours. if you select a random sample of size 30, the probability that the employees in your sample have taken, on average, more than 20.5 hours is

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The employees in certain division of cybertronics inc. need to complete a certification online. on a...