SOLUTION: In order to test a new production method, 36 employees were selected randomly to try the new method. The mean was 75.79 parts per hour with a standard deviation of 28.25 parts per

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Question 620500: In order to test a new production method, 36 employees were selected randomly to try the new method. The mean was 75.79 parts per hour with a standard deviation of 28.25 parts per hour.
What is the sample size needed to obtain a margin of error 14.01 with a 90% confidence interval?

Answer by ewatrrr(10682) (Show Source):
You can put this solution on YOUR website!

Hi,
In order to test a new production method, 36 employees were selected randomly to try the new method.
The mean was 75.79 parts per hour with a standard deviation of 28.25 parts per hour.
What is the sample size needed to obtain a margin of error 14.01 with a 90% confidence interval?
SE = 14.01 =
n = 11