Expected Value Stat

Choose an American household at random. What is the expected number of cars for that household?

Find the mean (expected value) of the probability distribution.

The distribution describes lotto ticket probabilities to win different amounts. What is the expected value for this lotto ticket? (Do not include a dollar symbol in answer)

A small store keeps track of the number X of customers that make a purchase during the first hour that the store is open each day. Based on the records, X has the following probability distribution. What is the average number of customers that the owner can expect to make a purchase in the first hour of opening?

Data was compiled and the number of goals for a hockey team per game and the corresponding probabilities are given below. If this hockey team plays an 82-game season, what is the expected cumulative goal total for the next season?

A car dealer buys hybrids for $21,000 each and sells them for $24,500 each. Find his expected weekly profit.

Find the expected value. READ CAREFULLY!