Name:
_____________________________________
Instructions:
Grade: Date:
8
6/16/2020
Answer the following questions.
Question 1
On a table, there are 18 english books,
25 math books, 22 science books, 21
history books, and 14 social study
books. If a professor is selected at
random, what is the probability that it is
a history book?
A.
0.22
B.
0.21
C.
0.021
D.
0.12
Question 2
On a table, there are 18 english books,
25 math books, 22 science books, 21
history books, and 14 social study
books. If a professor is selected at
random, what is the probability that it is
either a history book or a social study
book?
A.
0.21
B.
0.14
C.
0.35
D.
0.25
Question 3
In a season five top players of a team
scored following numbers of goals.
Player
James
Tim
Corian
Phil
Number of goals
150
128
98
101
If they keep the same performance,
what is the experimental probability
that the next goal will be scored by
Phil?
A.
101/477
B.
1/101
C.
0.101
D.
1.01
Question 4
In a season five top players of a team
scored following numbers of goals.
Player
James
Tim
Corian
Phil
Number of goals
150
128
98
101
If they keep the same performance,
what is the experimental probability
that the next goal will not be scored by
Phil or Corian?
A.
150/477
B. 278/477
C.
199/477
D. 128/150
Question 5
In a restaurant, there are 5 managers,
15 servers, 10 cooks and 15 other
personnel. If a person is selected at
random, what is the probability that the
person is either a manager or a cook?
A.
1/5
B.
15/40
C.
1/3
D.
1/15
Question 6
In a restaurant, there are 5 managers,
15 servers, 10 cooks and 15 other
personnel. If a person is selected at
random, what is the probability that the
person is neither a manager nor a
cook?
A.
1/3
B.
1/15
C.
3/2
D.
2/3
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Question 7
Probability that event A will occur is
Question 9
Probability that event A will occur is
0.33. What is the probability that event
A will not occur?
A.
0.17
B.
0.33
C.
0.67
D.
0.50
Question 8
Probability that event A will occur is
0.6. Probability that event B will occur
is 0.80. What is the probability that
event A and event B both will occur?
A.
0.6
B.
0.14
C.
0.48
D.
0.86
0.6. Probability that event B will occur
is 0.80. What is the probability that
neither event A nor event B will occur?
A.
0.08
B.
0.48
C.
0.52
D.
0.62
Question 10
Probability that event A will occur is
0.6. Probability that event B will occur
is 0.80. What is the probability that
event A will occur but event B will not
occur?
A.
0.6
B.
0.2
C.
0.12
D.
0.32
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