Concept explainers
(a)
To construct: the Venn diagram to represent this setting.
(a)
Answer to Problem 7.43E
42%
Explanation of Solution
Given:
College students have posted a profile on Facebook =85%
Using MySpace regularly = 54%
Using both = 42%
Graph:
Drawing the two overlapping ellipses which name one is Facebook and another is MySpace. In the intersection area write the percent that use both. In the left side write the percent that use only Facebook and in the right side writes the percent that use only MySpace. Outside the ellipses write the percent that use neither.
(b)
To Explain: the event in symbolic form using the two events of interest that you chose in (a).
(b)
Answer to Problem 7.43E
Explanation of Solution
Suppose that F represent the Facebook user and
(c)
To Calculate: the probability of the event described in (b).
(c)
Answer to Problem 7.43E
Explanation of Solution
Given:
The probability is given in the right half of the Venn diagram
(d)
To construct: the two-way table for this setting if it possible and explain if not possible.
(d)
Answer to Problem 7.43E
Yes, Possible
Explanation of Solution
F | Not F | Total | |
M | 0.42 | 0.12 | 0.54 |
Not M | 0.43 | 0.03 | 0.46 |
Total | 0.85 | 0.15 | 1 |
Chapter 7 Solutions
Statistics Through Applications
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