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A hospital checks the records of 340 randomly selected patients from the previous year. the average...

A hospital checks the records of 340 randomly selected patients from the previous year. the average length of the stay in the hospital is 4.3 days with a standard deviation of 3.1 days.
A) Findthe 95%Confidence interval for the true mean and intrepet it
B) Find the 99% Confidence interval for the true mean.
C)Compare the results of A and B and give reasons for any differences
.
B) x

Math   Statistics-And-Probability   
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