A Local Electronics Firm Wants to Determine Their Average Daily

question 96

Short Answer

A local electronics firm wants to determine their average daily sales (in dollars.) A sample of the sales for 36 days revealed average sales of $139,000. Assume that the standard deviation of the population is known to be $12,000.
a.Provide a 95% confidence interval estimate for the average daily sales.
b.Provide a 97% confidence interval estimate for the average daily sales.

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Definitions:

Call Premium

The amount by which the price of a callable bond exceeds its par (or nominal) value or the amount paid for an option above its intrinsic value.

Time Spread

An options or futures strategy where a trader simultaneously buys and sells the same financial instrument with different expiration dates.

Exercise Price

The specified price at which the holder of an option can buy or sell the underlying asset.

Expiration Date

The date on which an option, future, or derivative contract becomes invalid and the right to exercise it ceases.