Important indicator of lung function, Basic Statistics

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Important indicator of lung function

An important indicator of lung function is forced expiratory volume (FEV), which is the volume of air that the person can expire in one second. Dr. Hernandez plans to determine FEV in a random sample of n young women from certain population, and to employ the sample mean Y as an determine of the population mean. Let E be the vent that Hernandez's sample mean will be 100ml of population mean. Suppose that the population distribution of FEV is normal with standard deviation 400ml.

a) Find out Pr{E{ if n=15 and the population mean is 2800ml.

b) Find out Pr{E} if n=15 and the population mean is 2600ml.

c) How does Pr{E} depend upon the population mean?

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Basic Statistics: Important indicator of lung function

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