Concept explainers
a)
To find individuals and variables.
a)
Answer to Problem 50E
An individual is “member of the U.S. senate” and the variables are Political affiliation and Gender.
Explanation of Solution
First need to understand about individual and variable:
Individual: It is the objects which described by the set of the data.
Variable: It is the topic in which study is investigated.
Therefore, for given study, individual is “member of the U.S. senate”. The variables are Political affiliation and Gender.
b)
To find probabilities.
b)
Explanation of Solution
Given:
Male | Female | |
Democrats | 47 | 13 |
Republicans | 36 | 4 |
Formula:
Total possible outcomes = 47+13+36+4 = 100
Therefore,
Probability of female:
Probability of female democrat:
Probability that a female or democrat:
Chapter 5 Solutions
The Practice of Statistics for AP - 4th Edition
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