Concept explainers
a.
To find:the
a.
Answer to Problem 67E
Explanation of Solution
Given:
The two-way table describes the members of the U.S. Senate in a recent year.
Consider
Male | Female | |
Democrats | 47 | 13 |
Republics | 36 | 4 |
Concept used:
Probability is the number of favourable outcomes divided by the number of possible outcomes.
Thus, Definition condition probability:
Calculation:
According to the question, the person is female. Now to find the probability that the result for “democrats”.
Therefore,
Thus, the conditional probability becomes:
Thus,the probability that the result for “democrats” is
b.
To find: the probability that the result for “female” in the given table.
b.
Answer to Problem 67E
Explanation of Solution
Given:
The two-way table describes the members of the U.S. Senate in a recent year.
Consider event D is democrat, even R is republic, F is female.
Male | Female | |
Democrats | 47 | 13 |
Republics | 36 | 4 |
Concept used:
Probability is the number of favourable outcomes divided by the number of possible outcomes.
Thus, Definition condition probability:
Calculation:
According to the question, the person is democrats. Now to find the probability that the result for “female”.
Therefore,
Thus, the conditional probability becomes:
Hence, the probability that the result for “female”
Chapter 5 Solutions
The Practice of Statistics for AP - 4th Edition
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Statistical Reasoning for Everyday Life (5th Edition)
Elementary Statistics: Picturing the World (7th Edition)
Basic Business Statistics, Student Value Edition (13th Edition)
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