Predictions and Probability

Based on the results in the table, which statement is true about the next person surveyed?

• The person is twice as likely to choose a hamster than a cat.

• The person is more likely to prefer cats or birds than dogs.

• The person is less likely to prefer cats or birds than dogs.

• The person is three times as likely to prefer cats or hamsters than birds.

The 500 students in a school earned a special dinner for their fundraising efforts. A random survey of 50 students was conducted to determine how many of each meal should be prepared. The results of the survey are shown.  Based on the results, which is the best prediction of the meals to be ordered for all the students?

• There are 200 students who would want a pizza meal.

• There are 200 students who would want either a chicken or pasta meal.

• There are 130 more students who would want a pizza meal than a chicken meal.

• There are 100 more students who would want a pasta meal than a chicken meal.

Jeremy bought 8 packets of flower seeds. Each packet contained

32 seeds. He planted one packet of the seeds and 18 of them

sprouted. Which statement about the seeds in the remaining packets is best supported by this information?

• No more than 50 seeds will sprout.

• Between 150 and 200 seeds will sprout.

• Between 130 and 150 seeds will sprout.

• All 256 of the seeds will sprout.

Helen has 2 bouquets of flowers. Each bouquet contains 8 carnations.

• The bigger bouquet has 20 flowers.

• The smaller bouquet has 10 flowers.

Which statement is true?

• The probability of randomly selecting a carnation from the bigger bouquet is 2/5.

• The probability of randomly selecting a carnation from the smaller bouquet is 1.

• The probability of randomly selecting a carnation from the smaller bouquet is less than the probability of randomly selecting a carnation from the bigger one.

• The probability of randomly selecting a carnation from the bigger bouquet is 4/5.

The table shows the number of marbles of each color Sam has in a bag.

Sam selects a marble at random.

Based on the information in the table,

which statement is true.

• The marble is more likely to be black than yellow or blue.

• The marble is more likely to be black than all the other colors combined.

• The marble is 2 times as likely as to be yellow than red.

• The marble is 3 times as likely to be blue than yellow.

Some children put some bottles in rows. The first row had 15 bottles, the

second row had 8 bottles, and the third row had 2 bottles. What is the probability that a child knocks down one bottle in the second row?

• 8/25

• 2/25

• 3/5

• 2/5

A number cube with faces labeled from 1 to 6 was rolled 40 times. Each time

the cube was rolled, the number showing on the top face was recorded. The

table shows the results. Based on these results, what is the experimental probability that the next time the number cube is rolled it will land with 2 or 3 showing on the top face?

• 1/8

• 3/8

• 9/40

• 2/3

Cesar has two boxes of colored candies. The first box contains 5

green candies, 9 yellow candies, and 1 red candy. The second box

contains 3 green candies, 7 yellow candies, and 2 red candies. What is the probability that Cesar will select a green candy from each box?

• 7/12

• 8/27

• 5/9

• 1/12

Maya has 10 cookies in her lunch.

• 5 chocolate chip

• 3 sugar

• 2 oatmeal

She randomly chooses one cookie then puts it back and chooses another one.

What is the probability that she will choose a sugar cookie and then an

oatmeal cookie?

• 9/100

• 3/50

• 1/2

• 1/10

Blake has a bag of coins. The bag contains 15 quarters, 10 dimes,

and 5 nickels. What is the probability that Blake will select a quarter first and then a nickel if he randomly selects 2 coins from the bag without replacement?

• 1/12

• 39/58

• 5/58

• 2/3