WorksheetsProbability
Total questions: 15
Worksheet time: 1hrs 6mins
Name
Class
Date
1.
A bag contains some red-colored and some blue-colored marbles. First a red-colored marble is drawn and then, without replacing the first marble, a blue-colored marble is drawn. Are the two events dependent or independent?
a)
Independent
b)
Dependent
2.
There are 6 red marbles, 5 green marbles, and 4 yellow marbles in a bag. If Joe picks 2 marbles one after the other without replacement, then what is the probability that both are red in color?
a)
2/5
b)
1/21
c)
4/25
d)
1/7
3.
There are 2 violet balls and 4 pink balls in a bag. If two balls are drawn one after the other, then what is the probability of getting violet first and pink next, if the first ball drawn is replaced?
a)
1/3
b)
2/9
c)
1/6
d)
1/4
4.
What is the probability of rolling an even number on the first roll of a number cube and rolling an odd number on the second roll?
a)
1/4
b)
1
c)
1/8
d)
1/2
5.
A number cube is rolled and a coin is tossed. What is the probability of rolling a number greater than 4 and tossing tails?
a)
1/6
b)
1/3
c)
1/2
d)
1/4
6.
A marble bag contains 3 red marbles, 4 gray marbles, 6 white marbles, and 5 black marbles. What is the probability of randomly drawing a red marble and then a gray marble if the first marble is replaced?
a)
1/9
b)
1/27
c)
1/6
d)
2/9
7.
Given a standard deck of 52 playing cards, what is the probability of randomly drawing a 2 and then a 3 if the first card is not replaced?
a)
1/13
b)
4/663
c)
1/676
d)
1/169
8.
Sue will randomly select from a treat bag containing 6 lollipops and 4 gum balls. Sue will select a treat, not replace it, and then select a second treat.
a)
Independent
b)
Dependent
9.
Two fair coins are flipped at the same time. What is the probability that both with display heads?
a)
Independent
b)
Dependent
10.
Clare picks a marble at random, puts it back, and then picks another marble at random.
a)
Dependent
b)
Independent
11.
Describe the event as independent or dependent: Susie draws a card from a deck of cards and replaces it. She then draws a second card.
a)
Independent
b)
dependent
12.
What is the probability of spinning an even number?
a)
16 2/3%
b)
33 1/3%
c)
50%
d)
75%
13.
In a drawer, there are 6 white socks, 4 black socks, and 2 brown socks. You pick out a sock, replace it, then pick out a 2nd sock. What is the probability that you will pick a brown, then black sock?
a)
1/11
b)
1/18
c)
1/36
d)
2/33
14.
You roll two die.
What is the probability you will roll a 4, then roll a number less than 3?
What is the probability you will roll a 4, then roll a number less than 3?
a)
1/36
b)
1/18
c)
1/9
d)
1/6
15.
The experimental probability that Jonah will catch a fly ball is equal to 7/8. About what percent of the time will Jonah catch a fly ball?
a)
55%
b)
66%
c)
77%
d)
88%
100 %
