Concept explainers
a)
To make a two-way table for this chance process.
a)
Explanation of Solution
Given:
Proportion of Facebook users = 85%
Proportion of MySpace users = 54%
Proportion of Facebook and Myspace users = 42%
There are 20 million college students. Therefore, two-way table becomes,
Myspace | Not Myspace | Total | |
8400000 | 8600000 | 17000000 | |
Not Facebook | 2400000 | 600000 | 3000000 |
Total | 10800000 | 9200000 | 20000000 |
b)
To construct a Venn diagram.
b)
Explanation of Solution
Given:
Myspace | Not Myspace | Total | |
8400000 | 8600000 | 17000000 | |
Not Facebook | 2400000 | 600000 | 3000000 |
Total | 10800000 | 9200000 | 20000000 |
Venn diagram is,
c)
To write
c)
Answer to Problem 55E
Event is
Explanation of Solution
Given:
Probability represents that college students using Facebook or MySpace or both. This can be written in symbolic form as,
d)
To find
d)
Answer to Problem 55E
Explanation of Solution
Given:
Formula:
Total possible outcomes = 20,000,000
Therefore,
Chapter 5 Solutions
The Practice of Statistics for AP - 4th Edition
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