1.In a certain town, 70 percent of voters are in favor of a given ballot measure and 30 percent are opposed. For groups of 300 voters, find the mean for the number who are in favor of the measure.

2.An airline estimates that 96% of people booked on their flights actually show up. If the airline books 80 people on a flight for which the maximum number is 78, what is the probability that the number of people who show up will not exceed the capacity of the plane?

3.Suppose that two balanced dice, a red die and a green die, are rolled. Let X denote the value of G - R where G represents the number on the green die and R represents the number on the red die. Find P(X = -1)

4.Suppose you pay $1.00 to roll a fair die with the understanding that you will get back $3.00 for rolling a 5 or a 1, nothing otherwise. What is your expected value of your net gain?