Making Predictions with Simple Probability

In preparation for her ice cream party, Emily surveyed 35 students at Fossum Middle School about their favorite ice cream flavor. She found out that 7 of them like vanilla. If 210 students are expected to attend the ice cream party, predict how many will prefer vanilla?

• 42

• 30

• 75

• 45

Jillian rolled a number cube 360 times. About how many times do you expect her to roll a 2?

• 20 
• 180
• 60 
• 120

Josefina pulled 3 red marbles, 5 green marbles, 8 pink marbles, and 12 yellow marbles out of a bag. If she repeats this experiment 200 times, about how many pink marbles should she expect to pull from the bag?

• 55
• 57
• 59
• 53

Twenty-five people were asked which gift was their favorite.  Using the table,which statement is false?

• Perfume & flowers were equally favored
• Jewelry was the favorite 1/5 of the time.
• Perfume & clothes were favored half the time.
• Flowers were twice as popular as clothes

Four colors of blocks are placed in a bag and each time a block is chosen from the bag, its color is written down in the table and the placed back in the bag.  The experiment is conducted 75 times.  Which color has an experimental probability of 1/3?

• green
• blue
• yellow
• red

While standing outside of the school waiting to go home, you notice that 3 out of every 12 students leaving school are on their cell phones.  What is the probability that the next student leaving school will NOT be on his or her cell phone?

• 25%
• 30%
• 75%
• 70%

100 second graders were asked to do a book report about one of these four zoo animals.  The number of students who chose each animal is shown in the table.  If 250 second graders had to choose of of the four animals, predict how many would choose to write about a giraffe.

• 60 students
• 50 students
• 40 students
• 30 students

How many ways can you flip 3 coins?

• 4
• 6
• 8
• 10

How many combinations of outfits can you make from 3 pairs of shorts, 2 shirts, and 1 pair of shoes?

• 8 combinations
• 5 combinations
• 4 combinations
• 6 combinations

What is the probability of tossing two six-sided dice and both landing on 3?

• 1/6
• 1/36
• 1/4