February 20, 2017

Homework Help: STATISTICS

Posted by GT on Friday, December 28, 2012 at 2:31pm.

Length of Hospital Stays: The average length of “short” hospital stays for men is slightly longer thatn that for women: 5.2 days vs. 4.5 days. A random sample of recent hospital stays for both men and women revealed the following. At ? = 0.01, is there sufficient evidence to conclude that the average hospital stay for men is longer than the average hospital stay for women?
Sample Size 32 30
Sample Mean 5.5 days 4.2 days
Pop. Standard Deviation 1.2 days 1.5 days

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