Lesson 31 Quiz: Experimental Probability

Based on the results in the table, which is the best prediction of how many times Paola will draw a blue or a red marble in 5,000 trials?

• about 1,400 times

• about 3,000 times

• about 4,400 times

• about 3,600 times

Sammy counts the number of people in one section of the school auditorium. He counts 18 female students, 16 male students, and 6 teachers. There are 720 people in the auditorium. Consider the probability of selecting one person at random from the auditorium. Which TWO statements are true?

• There are only 6 teachers in the entire auditorium.

• The probability of selecting a student is 85%.

• The probability of selecting a male student is 32%.

• The probability of selecting a female student is 45%.

A spinner is divided into five sections, labeled A, B, C, D, and E. Devon spins the spinner 50 times and records the results in the table. If he spins the spinner 1,000 times, how many times should he expect it to land on B?

• 14

• 28

• 140

• 280

A spinner is divided into five sections, labeled A, B, C, D, and E. Devon spins the spinner 50 times and records the results in the table. If he spins the spinner 1,000 times, how many times should he expect it to land on a vowel?

• 16

• 120

• 160

• 200

• 320

A restaurant manager recorded the number of orders for each of four drinks available. The results are shown in the table. Determine whether the following prediction is TRUE or FALSE.

About 16 of the next 50 drink orders will be for water.

• TRUE

• FALSE

A restaurant manager recorded the number of orders for each of four drinks available. The results are shown in the table. Determine whether the following prediction is TRUE or FALSE.

About 15 of the next 100 drink orders will be for lemonade.

• TRUE

• FALSE

A restaurant manager recorded the number of orders for each of four drinks available. The results are shown in the table. Determine whether the following prediction is TRUE or FALSE.

About 27 of the next 150 drink orders will be for tea.

• TRUE

• FALSE

A restaurant manager recorded the number of orders for each of four drinks available. The results are shown in the table. Determine whether the following prediction is TRUE or FALSE.

About 30 of the next 200 drink orders will be for orange juice.

• TRUE

• FALSE

A restaurant manager recorded the number of orders for each of four drinks available. The results are shown in the table. Determine whether the following prediction is TRUE or FALSE.

About 75 of the next 100 drink orders will be for water or tea.

• TRUE

• FALSE

A restaurant manager recorded the number of orders for each of four drinks available. The results are shown in the table. Determine whether the following prediction is TRUE or FALSE.

About 100 of the next 200 drink orders will be for lemonade or orange juice.

• TRUE

• FALSE