Probability and Sample Space

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6
• 1/2
• 1/3
• 1/6

P(not A) =

*Remember to simplify.*

• 2/6

• 3/4

• 2/8

• 1/4

Tags

CCSS.7.SP.C.7B

An unlikely chance event is closer to what number?

• 0%

• 50%

• 75%

• 100%

Tags

CCSS.7.SP.C.5

In a random survey of 50 students at Summerville Middle School, 32 said chocolate was their favorite flavor of ice cream. The school has 450 students. How many of them are likely to select chocolate as their favorite flavor? 

• 144
• 162
• 225
• 288

Tags

CCSS.7.SP.A.2

There are 25 counters in a bag: 6 red,
4 white, 7 blue, and 8 yellow. You choose one counter at random. Which color are you least likely to choose? 

• white 
• blue 
• red 
• yellow

Tags

CCSS.7.SP.C.5

A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?

• 3/10

• 3/6

• 1/9

• 1/3

Tags

CCSS.7.SP.C.7B

An equally likely chance for an event to occur is what number?

• 0

• 1

• .5

• 100

Tags

CCSS.7.SP.C.5

A principal randomly chose 40 students from 7th grade. Of these students, 9 were wearing smart watches. Based on this information, what is the most reasonable prediction of the number of students wearing smart watches in a group of 120 students from the 7th grade?

• 27
• 9
• 18
• 80

Tags

CCSS.7.SP.A.2

A likely chance event is closer to what number?

• 0
• 1
• .5
• 100

Tags

CCSS.7.SP.C.5

If I flip a coin 10 times how many times should I get heads?

• 1
• 10
• 3
• 5

Tags

CCSS.7.SP.C.6