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Problem 8 Individual health care costs of senior citizens do not follow a normal distribution. The...

Problem 8

Individual health care costs of senior citizens do not follow a normal distribution.
The population mean equals $15,000 with a standard deviation of $25,000.

Mean = $15,000

Standard Deviation = $25,000

Can you approximate the percentage of seniors that spend between $10,000 and $20,000?

Suppose you sample 36 seniors. What is the probability their health care costs will have a sample average about $20,000?

A sample of 64 seniors are taken. What is the probability their mean health care costs are between $12,500 to $18,000?

Math   Statistics-And-Probability   
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