Probability Inferences

• Most women prefer sandals

• About an equal number of men prefer tennis shoes and sandals

• Men do not like tennis shoes

• Most men prefer sandals

If there are 400 students at the school, how many more students would like science than social studies?

• 10

• 400

• 4200

• 100

A box contains red, green, blue and yellow balls. Jill randomly took a ball out of the box 55 times and recorded its color. Each time, she replaced the ball before taking out another one. The table shows the colors of the balls that Jill took out of the box.

Which of these statements is true of each ball that Jill took out of the box?

• It is twice as likely to be red as it is to be blue.

• It is half as likely to be blue as it is to be green.

• It is three times as likely to be yellow as it is red.

• It is one-third times as likely to be green as it is yellow.

Javion has a basket in which he keeps his socks. The table shows the number and color of the socks in his basket.

If Javion reaches into the basket without looking and removes a sock, which of the following statements is true?

• Javion is one-half as likely to remove a black sock than a gray sock from the basket.

• Javion is equally likely to remove a blue or white sock from the basket as a black sock.

• Javion is three-fourths as likely to remove a gray sock as a blue sock from the basket.

• Javion is less likely to remove a black sock than a blue or gray sock from the basket.

Sam purchased 5 packages of balloons. Each package has 36 balloons. He opened 1 package that contained 11 red balloons. Based on the results, what can Sam predict about the packages of balloons?

• The packages will contain no more than 44 red balloons.

• The packages will contain between 40 and 60 red balloons.

• The packages will contain at least 66 but no more than 88 red balloons.

• The packages will contain more than 88 red balloons.

The person’s favorite sport is more likely to be __________________ than any other sport.

The person’s favorite sport is more likely to be baseball than _______________.

The probability of a person’s favorite sport being baseball is ____________. (Write as a fraction)

A person is least likely to choose _____________________.

The General Shipping Container received 32 crates of merchandise in a shipping container. The manager noticed that 3 of the crates were damaged. Based on the results, what can the manager predict about the next containers.?

• Two shipping containers will contain 4 more damaged crates than 1 shipping container.

• Three shipping containers will contain 6 more damaged crates than 1 shipping container.

• Four shipping containers will contain 8 more damaged crates than 1 shipping container.