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Probability Review 7th

Total questions: 13

Worksheet time: 1hrs 5mins

Name
Class
Date
1.
These 12 shapes are put into a bag.  What is the probablity of reaching into the bag without looking and pulling out a square, NOT replacing the square and pulling out a second square?
a)
1/11
b)
1/9
c)
1/3
2.
These 12 shapes are put into a bag.  If you reach into the bag 60 times, replacing the shape after each time, predict how many times you would pull out a circle.
a)
15 times
b)
20 times
c)
25 times
d)
30 times
3.

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 one of the four animals, predict how many would choose to write about a giraffe.

a)
60 students
b)
50 students
c)
40 students
d)
30 students
4.
A jar contains 2 green marbles, 4 blue marbles, 3 yellow marbles, and 2 black marbles. A marble is chosen at random from the jar and replaced. Then a second marble is chosen at random. Find the probability of the first marble being green and the second marble being yellow. 
a)
4/121
b)
8/121
c)
3/121
d)
6/121
5.

In a survey, 100 middle school students were asked which social media platform they preferred. The results are shown in the table above.


What is the probability that a student prefers TikTok?

CHECK ALL THAT APPLY

a)

72 out of 100

b)

72%

c)

0.72

d)

72/100

6.

If I spin 35 times, how many times would I land on yellow? *Hint: Set up a proportion.

(a)  

7.
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?
a)
25%
b)
30%
c)
75%
d)
70%
8.
150 people were polled on their favorite sport.  Based on the table, if you asked only 25 people what their favorite sport is, how many would say soccer is their favorite sport?
a)
5 people
b)
6 people
c)
8 people
d)
10 people
9.
What is the probability of tossing two six-sided dice and both landing on 3?
a)
1/6
b)
1/36
c)
1/4
10.

If the spinner is spun 80 times, how many times would it land on yellow? (hint:set up a proportion)

a)

10

b)

20

c)

30

d)

40

11.

Sara has a bag of coins. The bag contains 8 quarters, 10 dimes, 4 nickels, and 2 pennies. She will randomly select a coin from the bag. What is he probability that Sara will select a nickel?

a)

1/12

b)

1/3

c)

1/6

d)

1/5

12.

The spinner shown is divided into congruent sections labeled 1 through 8.


If the spinner is spun twice, what is the probability that the arrow will land on 1 and then on 8?

a)

1/8

b)

1/4

c)

1/64

d)

1/32

13.

P(not A) = 

a)
6/8
b)
3/4
c)
2/8
d)
1/4