August 2011
Intermediate to advanced
634 pages
21h 57m
English
Content preview from A First Course in Quality Engineering, 2nd Edition
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84 A First Course in Quality Engineering
Example 2.20
How many different committees of three can be formed with 2 women and 1 man
out of a group of 4 women and 6 men?
Solution
Look at this problem as having to fill two boxes, one with 2 women and the other
with 1 man:
W M
12
The box with women can be filled in
4
2
ways and the box with men in
6
1
ways.
The two boxes together can be filled in:
4
2
6
1
4
2 2
6
1 5
6 6 36
= × = × =
!
! !
!
! !
ways.
Example 2.21
A box contains 20 pencils, of which 16 are good and 4 are defective.
a. How many samples of 4 pencils can be drawn from the box?
b. How many samples of 4 are possible with exactly 1 defective? ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.