Probability Test Review #1

You roll a number cube. How likely is it that you will roll a number less than 1

• impossible

• unlikely

• likely

• certain

Mrs. Phillips has 10 identical cans without labels. She knows that she had 1 can of peas, 5 cans of corn, 1 can of carrots, and 3 cans of beets. She opens one can. What is the probability it is carrots?

• 1/2

• 3/10

• 1/10

• 3/5

Theresa is taking a multiple-choice test and does not know an answer. She can guess answer A, B, C, D, or E. What is the probability that Theresa will guess correctly?

• 2/10

• 2/5

• 1/5

• 1/2

7% of Americans are vegetarians. If you ask a random person whether he or she is a vegetarian, what is the probability that the person is not a vegetarian?

• impossible

• unlikely

• equally likely as not

• likely

What is the probability that a student’s favorite hobby is roller skating?

• 3/8

• 3/20

• 3/16

• 1/8

Suppose 200 seventh-grade students were surveyed. How many can be expected to say that roller skating is their favorite hobby?

• 40

• 25

• 38

• 20

What is the probability that someone’s favorite winter activity is building a snowman?

• 14/21

• 2/5

• 7/52

• 7/50

If 500 people had responded, how many would have been expected to list sledding as their favorite winter activity? Round to the nearest whole person.

• 99

• 100

• 101

• 98

A spinner marked with four sections blue, green, yellow, and red was spun 100 times. The results are shown in the table.

Find the experimental probability of landing on yellow.

• 2/100

• 2/25

• 8/101

• 2/51

Find the experimental probability of NOT landing on red.

• 68/100

• 17/25

• 11/25

• 8/25