A bag contains 6 red marbles, 3 blue marbles, and 7 green marbles

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MAT 155 Chapter 4
The following is a brief review of Chapter 4. This
does NOT cover all the material in that
chapter.
Click on Slide Show and View Slide Show.
Read and note your answer to the question.
Advance the slide to see the answer.
Thanks to Ms. Valerie Melvin for her portion of this review.
Dr. Claude Moore, Math Instructor, CFCC
A bag contains 6 red marbles, 3 blue
marbles, and 7 green marbles. If a
marble is randomly selected from the
bag, what is the probability that it is
blue?
1/3
1/7
3/16
1/13
0%
1/
13
0%
3/
16
0%
1/
7
0%
1/
3
1.
2.
3.
4.
Assume that one student in a class of
27 students is randomly selected to
win a prize. Would it be ‘unusual’ to
win?
1. Yes
2. No
0%
No
Ye
s
0%
A die with 8 sides is rolled. What is the
probability of rolling a number less
than 7?
7/8
6
3/4
1/8
0%
1/
8
0%
3/
4
0%
6
0%
7/
8
1.
2.
3.
4.
If a person is randomly selected, find
the probability that his or her birthday
is in May. Ignore leap years.
0%
0%
31
/3
65
0%
1/
31
0%
1/
12
1/365
1/12
1/31
31/365
1/
36
5
1.
2.
3.
4.
A bag contains 8 red marbles, 4 blue
marbles, and 1 green marble. Find
P(not blue).
9/13
9
13/9
4/13
0%
4/
13
0%
13
/9
0%
9
0%
9/
13
1.
2.
3.
4.
Of 45 people who answered “yes” to a question,
13 were male. Of the 83 people that answered
“no” to a question, 7 were male. If one person
is selected at random from the group, find the
probability that the person answered “yes” or
was male.
0.156
0.406
0.289
0.508
0%
.5
08
0%
.2
89
0%
.4
06
0%
.1
56
1.
2.
3.
4.
How many ways can an IRS auditor
select 6 of 11 tax returns for an audit?
0%
0%
72
0
0%
17
71
56
1
0%
33
26
40
462
332,640
1,771,561
720
46
2
1.
2.
3.
4.
There are 8 members on a board of
directors. If they must elect a
chairperson, a secretary, and a
treasurer, how many different slates of
candidates are possible?
56
336
512
40,320
0%
40
32
0
0%
51
2
0%
33
6
0%
56
1.
2.
3.
4.
If A and B are dependent events, then
P(A and B) is
1. P(A) x P(B|A)
2. P(A) x P(B)
3. P(A) x P(A|B)
B)
P(
P(
)x
P(
A
P(
A
)x
B|
P(
)x
P(
A
0%
A|
B)
0%
A)
0%
One of the 87 flights is randomly selected. Find the
probability that the flight selected arrived on time
given that it was an Upstate Airlines flight.
0%
0%
of
th
ea
bo
ve
is
c
or
. ..
43
/4
8
0%
No
ne
0%
11
/7
6
43/87
11/76
43/48
None of the above is correct.
43
/8
7
1.
2.
3.
4.

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