Probability Model Legitimate

Mr. Coffey has a basket full of fruit. Each of the 20 students in his class selects one piece of fruit from the basket without looking and puts it back in the basket. Based on the results shown, what can the students conclude about the probability of selecting an apple?

• There are no apples in the basket.

• There is about a 25% chance a student picks a fruit from the basket.

• It is more likely to pick an apple than it is to pick a pear.

• It is equally likely that a student will pick an apple.

Coach Claudia tells the class that a jar contains 300 marbles. Based on the table of marble colors after 60 draws, about how many green marbles are in the jar?

• 37

• 115

• 120

• 185

• 15

An arts and craft supply store has a large crate that contains copper, brass, and silver beads. Several friends take turns picking a bead, recording the bead type, and placing the bead back into the crate. Based on the table, find P(copper) in simplest form.

A sports bag contains 3 tennis balls, 4 baseballs, and 8 golf balls. Each is equally likely to be chosen. Which of the following models could be used to simulate this situation?

• flipping a coin fifteen times

• spinning a spinner with three equal sections

• choosing from 3 red marbles, 4 yellow marbles, and 8 blue marbles

• rolling a number cube fifteen times

Yesica has a bag containing colored beads. Her classmates take turns selecting one bead from the bag without looking, recording the color in the table, and replacing the bead. What is the experimental probability that a red bead is selected?

Use the spinner to find the probability.

P(not D) =

• 5

• 5/6

• 0.63

• 1/6

Use the spinner to find the probability.

P(2 or 3) =

• 1/4

• 3/8

• 2

• 2/4

A store is handing out coupons worth 10%, 15%, 20%, or 25% off. Each coupon is equally likely to be handed out. Which of the following models could be used to simulate this situation?

• flipping a coin four times

• spinning a spinner with four equal sections

• rolling a number cube labeled one through six one time

• rolling a number cube labeled one through six four times

What are the different possible outcomes for the spinner above?

• 1, 1, 2, 2, 2, 3, 3, 3

• 1, 2, 3

• 8