12 May 11. Military patients entering the Veterans Hospital
11. Military patients entering the Veterans Hospital in Anchorage have complained that it takes sixty minutes to fill out the required forms for admittance. As a result of all the complaints, the forms and procedures have been revised. A recent analysis of a random sample of nine incoming patients reveals that the mean time to fill out forms is now fifty minutes with a standard deviation of five minutes. Is there sufficient evidence at a five percent significance level to show that the system is an improvement? Assume the population standard deviation is unknown. Use the “t” procedure.
12. Dr. Thomas Brady gave a Principles of Internal Medicine examination and he assumed the results to be normally distributed with a mean of 59 and a standard deviation of 8. He wants to assign an “A” to the top five percent. What is the starting score for an “A”?
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