# 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 ```