The number of people in a car that crosses a certain bridge is a random variable x. The toll on the bridge is 2 dollars per car plus 70 cents per person in the car.
An expression for the amount of money that is collected from a car that crosses the bridge is:
The number of people in a car that crosses the bridge has a mean value of 1.8 and variance of 1.6. The toll on the bridge is $2 per car plus 70 cents per person in the car.
What is the mean of the amount of money that is collected from a car that crosses the bridge?
What is the variance of the amount of money that is collected from a car that crosses the bridge?
What is the standard deviation of the amount of money that is collected from a car that crosses the bridge?
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