## The employees in certain division of Cybertronics Inc. need to complete a certification online. On average, it takes 20 hours to complete th

Question

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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1 week 2021-11-25T03:27:50+00:00 1 Answer 0

Step-by-step explanation:

Let x be the random variable that represents the time to complete the coursework and successfully pass all tests.

Given : 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.

i.e.

Sample size = 30

The probability that the employees in your sample have taken, on average, more than 20.5 hours i will be :

The probability that the employees in your sample have taken, on average, more than 20.5 hours is 0.3241 .