Probability Review

What is the probability of getting any letter that is not A?

• 5/8

• 3/4

• 2/8

• 1/4

Neil tossed a 6-sided die 90 times. The results of his tosses are recorded in the table below: Which number has the experimental probability of 13/90?

• 1

• 2

• 3

• 4

• 5

What is the theoretical probability of the spinner landing on a 5?

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The letters that form the word MATHEMATICS are placed in a bowl. What is the probability of choosing a "M"?

• 8/121

• 4/11

• 2/11

• 1/26

A bottle contains 8 marbles: 3 are red and 5 are blue. You are to take a marble from the bottle without looking. What is the probability that you pick a red marble?

• 1/3

• 3/8

• 5/8

• 3/5

A die is rolled, what is the probability that the number rolled is greater than 2?

• 2/3

• 1/3

• 1/2

• 1/4

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6

• 1/2

• 1/3

• 1/6

A classroom is arranged with 8 seats in the front row, 10 seats in the middle row, and 12 seats in the back row. The teacher randomly assigns seats to students as they enter the classroom. What is the probability that the first students who enters the classroom will be assigned a seat in the front row?

The manager of a restaurant randomly surveyed 50 customers who came to the restaurant on Saturday. She asked about the type of entree each person preferred. The results of her survey are shown in the table.

Based on the results in the table, which statement about a customer who will order an entree next Saturday is true?

• The customer is three times as likely to prefer chicken as beef.

• The customer is twice as likely to prefer vegetarian as beef.

• The customer is less likely to prefer beef than seafood.

• The customer is more likely to prefer beef than chicken.

The following table shows the results of a survey in which 50 people were asked to name their favorite sport.
Based on these results, how many people out of 1000 would you expect to pick soccer as their favorite sport?

• 240

• 120

• 250

• 225