7th 7-4 Probability Models

There are four groups left to present their final projects. The groups are listed alphabetically from Group A to Group D. The teacher will choose one group at random to present their project. List all the outcomes in this sample space for this action.

• Group A​, Group B​, Group​ C, Group D

• Student A​, Student B​, Student​ C, Student D

• Student A and Student D

• Group A and Group D

Tags

CCSS.7.SP.C.8

You are playing a game using this spinner. You get one spin on each turn. Find a complete probability model for one spin of the spinner.

• P(number ​3)=1/4, ​P(letter ​A)= 1/4

• P(number)=1/2​, ​P(letter ​Y)= 1/4

• P(letter)=1/2​, P(number)=1/2

• P(letter)=1/2​, ​P(number ​5)= 1/4

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

A box contains green marbles and blue marbles. Yosef shakes the box and chooses a marble at random. He records the​ color, then places the marble back into the box. Yosef repeats the process until he chooses 50 marbles. The table shows the count for each color. P(Green) = ?

• 36%

• 28%

• 72%

• 14%

Tags

CCSS.7.RP.A.3

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

A box contains green marbles and blue marbles. Yosef shakes the box and chooses a marble at random. He records the​ color, then places the marble back into the box. Yosef repeats the process until he chooses 50 marbles. The table shows the count for each color. P(Blue) = ?

• 36%

• 28%

• 72%

• 14%

Tags

CCSS.7.RP.A.2

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 table shows data from a survey asking people what type of writing instrument they like. P(Blue Pens) = ?

• 30%

• 70%

• 75%

• 44.8%

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

CCSS.7.SP.A.1

CCSS.7.SP.A.2

The table shows data from a survey asking people what type of writing instrument they like. P(Black Pens) = ?

• 30%

• 70%

• 75%

• 44.8%

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

CCSS.7.SP.A.1

CCSS.7.SP.A.2

The table shows data from a survey asking people what type of writing instrument they like. If 400 people were​ surveyed, about how many people would say they like pencils or black pens.

• 179

• 120

• 280

• 400

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.3

CCSS.6.SP.B.5

A survey asked 600 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? Find the probabilities for a complete probability model for the responses.

• 270

• 168

• 132

• 315

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

CCSS.7.SP.C.5

CCSS.7.SP.C.7

A survey asked 600 people for their favorite genre of book. The table shows the data. P(Romance) = ?

• 30.6%

• 22%

• 28.5%

• 25%

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

CCSS.7.SP.A.1

CCSS.7.SP.A.2

CCSS.7.SP.C.5

A number cube is weighted so that the faces​ 1, 2, or 3 are all twice as likely to occur as each of the faces labeled​ 4, 5, or 6. What statements must you add to ​P(1)=2/9​, ​P(2)=2/9​, ​P(3)=2/9 to make a complete probability​ model?

• P(4)=1/9​, ​P(5)=1/9​, ​P(6)= 1/9

• ​P(4)=1/9​, ​P(5)=1/9​, ​P(6)= 2/9

• P(4)=1/12​, ​P(5)=1/12​, ​P(6)= 1/4

• P(4)=1/4​, ​P(5)=1/4​, ​P(6)= 1/12

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7