Textbook ExpertVerified Tutor
14 Nov 2021
Given information
Given that, the average length of maternity stay in a U.S. hospital is said to be 2.4 days with a standard deviation of 0.9 days. We randomly survey 80 women who recently bore children in a U.S. hospital.
Then we have to check whether it is likely that the average stay for the 80 women was more than five days and justify our answer.
Step-by-step explanation
Step 1.
From the above, we have .
Then the probability that the average stay for the 80 women was more than five days is given by,
Therefore the probability that the average stay for the 80 women was more than five days is .
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