A local university administers a comprehensive examination to the recipients of a B.S. degree in Business Administration. A sample of 5 examinations is selected at random and scored. The scores are shown below. 
a.Compute the sample mean and the standard deviation.
b.Determine the margin of error at 95% confidence.
c.At 95% confidence, determine an interval for the mean of the population.
At 98% confidence, determine an interval for the mean of the population.
Definitions:
Discount Rate
The discount rate is the interest rate used to determine the present value of future cash flows in discounted cash flow analysis.
Discount Periods
Time frames during which a payer can make payment less than the nominal amount due before a specified due date to receive a discount.
Discount Rate
The interest rate charged by central banks for loans to commercial banks or the rate used in discounted cash flow analysis to determine the present value of future cash flows.
Present Value
The present worth of a future amount of money or series of cash flows, considering a certain rate of return.
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