Quantitative Probability

The table shows the number and type of balls in a bin. Mr. Davis selects a ball at random. Based on the information in the table, which statement is true?

• The ball is least likely to be a golf ball.

• The ball is less likely to be a racquetball than a golf ball.

• The ball is just as likely to be a baseball as a tennis ball or racquetball.

• The ball is more likely to be a tennis ball than a baseball.

A bag contains 20 pink candies, 8 red candies, and 12 green candies. Without looking, Sarah pulls out a piece of candy. Which color of candy is least likely to be pulled out?

• Pink

• Red

• Green

• certain

• likely

• not likely

• impossible

Monica and Simone are playing a game using a number cube. The number cube is numbered 1 through 6. Monica needs to roll an odd number to win. Simone needs to roll an even number to win. What is the probability of Simone winning compared to Monica’s probability of winning?

• The chance of Simone winning is greater compared to Monica

• The chance of Simone winning is less than compared to Monica

• The chance of Simone winning is equal compared to Monica

• not be uniform because the probability of rolling each number is different

• be uniform because the probability of rolling each number is different

• not be uniform because the probability of rolling each number is the same

• be uniform because the probability of rolling each number is the same

Vy is shopping for a car. It comes in red, blue, or silver. She can also choose a 2-door and 4-door version along with a manual or automatic transmission. What is the theoretical probability that Vy will pick 4-door car, automatic transmission and it being red or blue?

Mathematical Equivalence

ON

In a certain population of birds, about 40 percent of the birds have a wingspan greater than 10 inches. Biologists studying the birds will create a simulation with random numbers to estimate the probability of finding 1 bird in a sample of 6 birds with a wingspan greater than 10 inches. Which of the following assignments of the digits 0 to 9 will model the population?

• Let the even digits represent birds with a wingspan greater than 10 inches and the odd digits represent birds with a wingspan less than or equal to 10 inches.

• Let the digits 0 and 1 represent birds with a wingspan greater than 10 inches and the remaining digits represent birds with a wingspan less than or equal to 10 inches.

• Let the digits from 0 to 2 represent birds with a wingspan greater than 10 inches and the remaining digits represent birds with a wingspan less than or equal to 10 inches.

• Let the digits from 0 to 3 represent birds with a wingspan greater than 10 inches and the remaining digits represent birds with a wingspan less than or equal to 10 inches.

• Let the digits from 0 to 4 represent birds with a wingspan greater than 10 inches and the remaining digits represent birds with a wingspan less than or equal to 10 inches.

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 labeled one through six fifteen times

12 out of 50 seventh graders said they would be willing to pay between $21-$30 dollars for a class trip. If there are 350 students in the seventh grade, about how many would go on the trip if it cost $30?

• 20 Students

• 34 Students

• 84 Students

• 350 Studetns

The chance that some event will occur

• Probability

• Sample Space

• Prediction

• Random