More review 10.1 &10.2

A gambler who keeps placing $1 bets on roulette will, after a very large number of bets, find that his average winnings per bet are close to $0.947. (The house keeps the other $0.053 per bet.) The statistical term for the number $0.947 is

• the probability of winning a bet.

• the bias of a bet.

• a random number.

• the Normal value of the bet.

• the expected value of a bet.

Pam’s Pizza Parlor offers six different toppings for pizza: pepperoni, sausage, meatballs, peppers, onions, and mushrooms. The next four questions refer to pizza from Pam’s.

You want to order a pizza with two toppings. How many different combinations of toppings are possible? (Note: “double pepperoni”—or double anything—is not an option.).

• 2

• 12

• 15

• 30

• 36

Pam’s Pizza Parlor offers six different toppings for pizza: pepperoni, sausage, meatballs, peppers, onions, and mushrooms. The next four questions refer to pizza from Pam’s.

If you order a pizza with three toppings, how many of those possibilities will include pepperoni?

• 6

• 10

• 15

• 30

• 40

Pam’s Pizza Parlor offers six different toppings for pizza: pepperoni, sausage, meatballs, peppers, onions, and mushrooms.

If you have a friend choose randomly from all the possible three-topping options, what is the probability that the pizza he orders will have pepperoni on it?

• 1/6

• 1/3

• 1/2

• 2/3

• 5/6

Pam’s Pizza Parlor offers six different toppings for pizza: pepperoni, sausage, meatballs, peppers, onions, and mushrooms.

If you have enough money to buy a pizza with zero, one, or two toppings, how many different pizzas are possible?

• 7

• 21

• 22

• 37

• 90

A jazz combo has six musicians: a drummer, a bassist, a pianist, a trumpeter, and two saxophonists. For a certain song, they plan for 4 solos by four different players. How many different sequences of solos can be arranged?

• 15

• 24

• 360

• 1296

• 4096

A jazz combo has six musicians: a drummer, a bassist, a pianist, a trumpeter, and two saxophonists. For a certain song, they plan for 4 solos by four different players.

If the sequence of solos described is chosen randomly, what is the probability that none of the solos is played by the drummer?

• 1/6

• 1/3

• 1/2

• 2/3

• 5/6

An elementary school teacher assigns classroom jobs to three students each week. One student hands out craft supplies, one erases the chalkboard, one takes messages to the office. How many different ways can the teacher assign these three jobs to the 24 students in her class?

• 8

• 24

• 2,024

• 12,144

• 13,824