SOLUTION: 200 laboratory sample orders were reviewed and it was determined that the mean turnaround time was 55.6 minutes for reporting the results to the physician. The turnaround times wer

Algebra ->  Probability-and-statistics -> SOLUTION: 200 laboratory sample orders were reviewed and it was determined that the mean turnaround time was 55.6 minutes for reporting the results to the physician. The turnaround times wer      Log On


   

Question 1086417: 200 laboratory sample orders were reviewed and it was determined that the mean turnaround time was 55.6 minutes for reporting the results to the physician. The turnaround times were normally distributed and showed a sample standard deviation of 5.2 minutes. The researcher s would like to construct a 90% confidence interval.
Calculate the Margin of Error:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
margin of error for 90% CI is +/-1.652 the t-value for n=200*s/sqrt(n)
=+/-1.652*5.2/sqrt(200)=0.6074
The 90% CI is 55.6+/-0.61 minutes