1. Discrete Review Game

2. About 25% of those called for jury duty will find an excuse (work, poor health, travel, etc.) to avoid jury duty. If 12 people are called, what is the probability that less than 6 will not be available to serve? P(X < 6) =.9456 Binomial

3. A survey of families in Statsylvania found that 12% of the households had not motor vehicles, 36% had one vehicle, 33% had two vehicles, 18% had three vehicles, and 1% had four vehicles. Find the mean and standard deviation for this distribution.  = 1.6 &  =.95 Random

4. The EPA reports that 81% of Americans do not recycle garbage. If 6 Americans are randomly selected, find the probability that at least two of them recycle. P(X > 2) =.3201 Binomial

5. One airline has found that 9% of the people who make reservations do not show. If the airline has accepted 220 reservations for a plane that has 210 seats, what is the probability that there are enough seats for all the passengers who show up? P(X < 210) =.9959 Binomial

6. An experiment consists of tossing a coin 10 times. What is the probability that the first head will occur on the fourth toss? P(X = 4) =.0625 Geometric

7. According to the US Census Bureau, about 22% of American children under the age of 6 live in households with incomes below the official poverty level. A random sample of 400 children under the age of 6 is taken. What are the mean and standard deviation of children in the sample who come from households with incomes below the official poverty level?  = 88 &  = 8.28 Binomial

8. The probability that a student is tardy to Statistics class is 0.012. (They just can ’ t wait to come to class!) How many students should Mrs. Fritz expect to see before the first one is tardy?  = 83.33 Geometric

9. ART receives an average of 1.2 orders an hour for rat traps; if they hold 14 rat traps in inventory, what is the probability that on any given eight-hour day they will be unable to ship all the traps for which they receive orders? Poisson P(X >14) =.0643