Question: May I please get assistance/direction on how to answer this homework question? Thanks. Question 23: Computer Services, Inc. wants to determine a confidence interval for

May I please get assistance/direction on how to answer this homework question? Thanks.

Question 23:

Computer Services, Inc. wants to determine a confidence interval for the average CPU time of their teleprocessing transactions. A sample of 34 transactions yielded a mean of 4 seconds with a standard deviation of 0.9 seconds.

What is the Margin of Error (MOE) if a 95% confidence interval is desired?
What is a 95% confidence interval (CI) estimate for the mean CPU times?
How large the sample must be in order to obtain 97% confidence interval with margin of error equal to .2 second.

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