2 15. a. 5 28 b. 125 118 c. 125 7 d. 20
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Q15
Transcribed Image Text:2
15. a.
5
28
b.
125
118
7
d.
20
C.
125
Transcribed Image Text:15 The staff employed by a college are classified as academic, administrative or support. The table below
shows the numbers employed in these categorise and their gender.
|Male
Female
Academic
Administrative
42
28
7
13
Support
26
9.
A member of staff is selected at random. Find the probability that the person selected is
a. a female.
b. a female and also an academic staff.
c.
a female or not an administrative staff.
d. a male given that the person is an administrative staff.
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