WorksheetsProbability
Total questions: 25
Worksheet time: 37mins
Name
Class
Date
1.
A store sells shirts that are either small, medium, or large. The colors are either red, blue, green, or white. What is the probability someone will select a large green shirt?
a)
1/3
b)
1/7
c)
1/9
d)
1/12
2.
You pick a marble from this bag.
What is the probability you will choose either a black or white marble?
What is the probability you will choose either a black or white marble?
a)
3/5
b)
9/100
c)
1/10
d)
2/5
3.
P(not A) =
*Remember to simplify.*
*Remember to simplify.*
a)
6/8
b)
3/4
c)
2/8
d)
1/4
4.
What is the probability of spinning green?
a)
0
b)
1/4
c)
1/2
d)
3/4
5.
Clara picks a marble at random, puts it back, and then picks another marble at random.
a)
Dependent
b)
Independent
6.
A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?
a)
3/10
b)
3/9
c)
1/9
d)
1/3
7.
How do you write 0.02 as a percent?
a)
20%
b)
200%
c)
2%
d)
.02%
8.
What is the probability of spinning an even number?
a)
16 2/3%
b)
33 1/3%
c)
50%
d)
75%
9.
A bag contains 9 green marbles, 5 yellow marbles and 6 red marbles. You choose one marble. What is the probability of selecting a green or red marble? Do you add or multiply probabilities?
a)
Add
b)
Multiply
10.
If you roll one die, what is the probability of getting an odd number or a 4? Are the events inclusive or mutually exclusive?
a)
Not Mutually Exclusive
b)
Mutually exclusive
11.
Two events are mutually exclusive if:
a)
they cannot happen at the same time
b)
they can happen at the same time
c)
they always happen
d)
they never happen
12.
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
13.
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
14.
Two fair coins are tossed. What is the probability of getting at most one head? (Hint: Create a sample space)
a)
1/2
b)
3/4
c)
1/4
d)
1
15.
What is the probability of selecting an orange candy?
a)
0%
b)
25%
c)
50%
d)
100%
16.
A coin is tossed and a number cube is rolled. Find the probability, P(heads and 7).
a)
1/14
b)
1/2
c)
0
d)
1/7
17.
What is the probability that the person picked will be a boy given they speak german?
a)
.7273
b)
.4
c)
.16
d)
.22
18.
What is the probability that a female is chosen given they like a Toyota?
a)
.525
b)
.4627
c)
.6774
d)
.3143
19.
What is the probability that a student plays an instrument?
a)
.55
b)
.5
c)
.45
d)
.4
20.
There are seven boys and seven girls in a class. The teacher randomly selects one student to answer a question. Later, the teacher randomly selects a different student to answer another question. What is the probability that the first student is a boy and the second student is a girl?
a)
7/26
b)
1/2
c)
2/17
d)
8/29
21.
A basket contains four apples and six peaches. You randomly select one piece of fruit and eat it. Then you randomly select another piece of fruit. What is the probability that both pieces of fruit are apples.
a)
2/15
b)
3/17
c)
1/19
d)
6/21
22.
A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement.P(both marbles are purple)
a)
2/9
b)
1/3
c)
1/2
d)
1/4
23.
What statement does the shaded region represent
a)
A or B
b)
Not A
c)
A and B
d)
Not B
24.
What percentage of the days that it rained, did they forecast no rain?
a)
About 20%
b)
About 18%
c)
About 14%
d)
About 12%
25.
What is Theoretical Probability?
a)
The ratio of favorable outcomes to the total number of possible outcomes
b)
The ratio of favorable outcomes to the total number of trials in an experiment
c)
In probability, a controlled, repeated process (such as repeatedly tossing a coin).
d)
A single possible result.
100 %
