Probability Models

Mr. Cardarella has a box of dry erase markers. When he has students write on the board, they draw one marker without looking. Based on the results in the table, which of the following predictions makes the most sense?

• There are probably more blue markers than any other color.

• There are probably more purple markers than red markers.

• There are probably less green marker than blue markers.

• There are probably less blue markers than any other color.

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Coach Claudia tells the class that a jar contains 300 marbles. Based on the table of marble colors after 60 draws, about how many green marbles are in the jar?

• 37

• 115

• 120

• 185

• 15

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Mr. Coffey has a basket full of fruit. Each of the 20 students in his class selects one piece of fruit from the basket without looking and puts it back in the basket. Based on the results shown, what can the students conclude about the probability of selecting an apple?

• There are no apples in the basket.

• There is about a 25% chance a student picks a fruit from the basket.

• It is more likely to pick an apple than it is to pick a pear.

• It is equally likely that a student will pick an apple.

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

CCSS.7.SP.C.5

CCSS.7.SP.C.6

CCSS.7.SP.C.7

The probability model based on experimental probability for randomly selecting a marble from a bag is P(green) = $\frac{18}{40}$ , P(blue) = $\frac{14}{40}$ , and P(white) = $\frac{8}{40}$ . If there are 60 total marbles in the bag, how many would you expect to be white?

Tags

CCSS.6.EE.B.7

CCSS.6.NS.A.1

CCSS.6.RP.A.3

Ghazal is picking out a snack. She has a banana, an orange, an apple, and a pear to choose from. Which answer choice represents the sample space?

• Banana, Orange, Apple, Pear

• Apple

• Picking a snack

• Apple, Pear, Orange

• Event

An arts and craft supply store has a large crate that contains copper, brass, and silver beads. Several friends take turns picking a bead, recording the bead type, and placing the bead back into the crate. Based on the table, find P(copper) in simplest form.

• $\frac{6}{25}$

• $\frac{4}{30}$

• $\frac{2}{5}$

• $\frac{9}{25}$

Tags

CCSS.6.NS.A.1

CCSS.6.RP.A.1

CCSS.6.RP.A.3

What probability statement would you add to P(blue) = $\frac{3}{5}$ to make a complete probability model for the event choosing a foam ball at random from the box? 

• P(red) = $\frac{3}{5}$  

• P(red) = $\frac{2}{5}$  

• P(ball) = 1

• P(blue) = $\frac{3}{5}$  

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

A survey asked 300 people for their favorite genre of book. The table shows the data. How many people surveyed responded with a genre other than one of those listed in the table?

Tags

CCSS.6.SP.B.5

Yesica has a bag containing colored beads. Her classmates take turns selecting one bead from the bag without looking, recording the color in the table, and replacing the bead. What is the experimental probability that a red bead is selected?

• P(red) = $\frac{10}{42}$  

• P(red) = $\frac{10}{55}$  

• P(red) = $\frac{10}{165}$  

• P(red) = $\frac{55}{165}$  

Tags

CCSS.6.NS.A.1

CCSS.6.RP.A.1

CCSS.6.RP.A.3

The results of a survey asking 500 people about their favorite ice cream flavor are shown in the table. Find P(strawberry) as a percentage.

Tags

CCSS.5.NF.B.3