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Probability review

Total questions: 13

Worksheet time: 32mins

Name
Class
Date
1.
What is the probability of spinning green?
a)
0
b)
1/4
c)
1/2
d)
3/4
2.

P(not A) *simplest form

a)

6/8

b)

3/4

c)

2/8

d)

1/4

3.
Is the event INDEPENDENT or DEPENDENT?
You have a jar with 24 pieces of chocolate candy and 14 pieces of orange candy.  We take one piece of candy at random from the jar, put it back, and then take a second piece of candy at random from the jar.
a)
Independent
b)
Dependent
4.

Is the event INDEPENDENT or DEPENDENT?

Amy plays card games. She picks a card at random. Then without putting the first card back, she picks a second card at random.

a)

Independent

b)

Dependent

5.

There are 4 black marbles and 2 white marbles in a bag. What is the probability of choosing a black marble, not replacing it, and then choosing white.

a)

4/15

b)

3/17

c)

2/5

d)

2/19

6.
The tree diagram shows the outcomes of rolling a die and flipping a coin.  
How many total outcomes are there?  
a)
6
b)
12
c)
24
d)
36
7.
Which shows the sample space for flipping two coins?
a)
H, T
b)
HH, HT, TH, TT
c)
HH, TT
d)
Dime, Nickel
8.
What is the probability of rolling a cube and having it land as a six?
a)
1/6
b)
5/6
c)
1/3
d)
1/2
9.

An outcome with the probability of 19/20 would be described as _.

a)

likely

b)

unlikely

c)

equally likely as not

d)

certain

10.

If you roll a die one time, find P(even number).

a)

1/4

b)

2/6, or 1/3

c)

3/6 or 1/2

d)

3/4

11.

If you roll a die one time, find P(a number less than 3).

a)

2/6, or 1/3

b)

5/6

c)

3/6, or 1/2

d)

2/5

12.
Ricardo has the spinner pictured here and a bag of marbles filled with 2 red marbles, 3 green marbles, and 3 blue marbles. What is the probability that Ricardo spins red on the spinner and picks a red marble out of the bag?
a)
1 ⁄ 16
b)
1 ⁄ 2
c)
1 ⁄ 4
d)
1 ⁄ 8
13.

A quiz contains 5 true or false questions. If you forgot to study and do not know the answer to them and guess, what is the probability of getting them all right? HINT: What is the probability of getting a True or False question correct on a test

a)

1/60

b)

1/32

c)

1/6

d)

1/2