The Good-Guys Car Dealership has tracked the number of used cars sold at its downtown dealership.Consider the following data as representing the population of cars sold in each of the 8 weeks that the dealership has been open. 
The population variance is approximately 9.43.
Definitions:
Stock Price
The value of a single share of a company's stock, determined by the balance of buying and selling activity in the stock market.
Probability
The measure of the likelihood that an event will occur, quantified between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.
Expected Value
The expected value is a statistical concept that calculates the mean of all possible values of a random variable, weighted by their respective probabilities.
Stock Price
Stock price is the value of a company's shares traded on the stock market, representing investor's valuation of the company's future earnings potential.
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