HW
Ch 5.5
Rio Hondo College
Name: ------------------------------------------
Math 130
Hovsepian
Homework 5.5: The intent is to convince me that you have mastered the concepts and you are
able to connect concepts learned. Please provide explicit, detailed and elegant work with love.
Grading:
Excellent Work (100 p)
Average Work (70 p)
Not Satisfactory (NS 0 p)
Since some may still NOT have their textbooks secured, I am providing this HANDOUT with
selected content from the textbook as a time saver and courtesy for all.
Ch 5 - Section 5.5 HW:
EW
AW
Grade:
NS
Date HW Assigned
Assigned Problems
34, 40, 64, 66,
Section
Problems NOT Completed
5.5
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Checking For Understanding
34. Arranging Students In how many ways can 15 students be lined up? Set the
problem and then use your Graphing calculator in getting the answer.
Solution:
1
Math 130/Hovsepian/Section 5.5 HW
40. Social Security Numbers A Social Security number
is used to identify each resident of the United States
uniquely. The number is of the form xxx–xx–xxxx, where
each x is a digit from 0 to 9.
(a) How many Social Security numbers can be formed?
Solution:
(b) What is the probability of correctly guessing the Social Security number of the
president of the United States?
Solution:
64. In the Dark A box containing twelve 40-watt light bulbs and eighteen 60-watt
light bulbs is stored in your basement. Unfortunately, the box is stored in the dark
and you need two 60-watt bulbs.
What is the probability of randomly selecting two 60-watt bulbs from the box?
Solution:
2
Math 130/Hovsepian/Section 5.5 HW
66. Packaging Error Through a manufacturing error, three cans marked “regular
soda” were accidentally filled with diet soda and placed into a 12-pack. Suppose
that three cans are randomly selected from the 12-pack.
(a) Determine the probability that exactly two contain diet soda.
Solution:
(b) Determine the probability that exactly one contains diet soda.
Solution:
(c) Determine the probability that all three contain diet soda.
Solution:
3
Math 130/Hovsepian/Section 5.5 HW