Practice question #4: A hospital is evaluating a method of evaluating flu patients while they remain in their car. In a sample of 47 flu patients, the average time for the patients’ evaluations were 30 minutes with sample standard deviation 1.7 minutes. a. Find the 90% confidence interval for the mean evaluation time for flu patients who come to the hospital. Also verify that the sample size was appropriate for this method. In your work, write out the formula you are using. Round final answers to 1 decimal place. Address appropriateness of size: Confidence Interval = _____________________________ State your results in context of the problem. Use precise language. True or False: You can say there is a 90% chance that the population mean evaluation time for flu patients at the hospital lies between these two numbers. True or False: If you calculated a 95% confidence interval, it would be wider than your answer above. (You do not have to calculate it).
Practice question #4: A hospital is evaluating a method of evaluating flu patients while they remain in their car. In a sample of 47 flu patients, the average time for the patients’ evaluations were 30 minutes with sample standard deviation 1.7 minutes.
a. Find the 90% confidence interval for the mean evaluation time for flu patients who come to the hospital. Also verify that the
Address appropriateness of size:
Confidence Interval = _____________________________
-
State your results in context of the problem. Use precise language.
-
True or False: You can say there is a 90% chance that the population mean evaluation time for flu patients at the hospital lies between these two numbers.
-
True or False: If you calculated a 95% confidence interval, it would be wider than your answer above. (You do not have to calculate it).
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