Concept explainers
a.
To find: probability that a person selected at random from the sample is a person who does not favor the amendment.
a.
Answer to Problem 36E
Explanation of Solution
The given data is summarized in the following table:
Favor | Not Favor | Unsure | Total | |
D | 23 | 25 | 7 | 55 |
R | 32 | 9 | 4 | 45 |
Total | 55 | 34 | 11 | 100 |
Let E be the event that person selected at random from the sample is a person who does not favor the amendment.
Then
Total number of people surveyed is
Thus, the probability that person selected at random from the sample is a person who does not favor the amendment is:
b.
To find: probability that a person selected at random from the sample is a Republican.
b.
Answer to Problem 36E
Explanation of Solution
The given data is summarized in the following table:
Favor | Not Favor | Unsure | Total | |
D | 23 | 25 | 7 | 55 |
R | 32 | 9 | 4 | 45 |
Total | 55 | 34 | 11 | 100 |
Let F be the event that person selected at random from the sample is a Republican.
Then
Total number of people surveyed is
Thus, the probability that person selected at random from the sample is a Republican is:
c.
To find: probability that a person selected at random from the sample is a Democrat who favors the amendment.
c.
Answer to Problem 36E
Explanation of Solution
The given data is summarized in the following table:
Favor | Not Favor | Unsure | Total | |
D | 23 | 25 | 7 | 55 |
R | 32 | 9 | 4 | 45 |
Total | 55 | 34 | 11 | 100 |
Let G be the event that person selected at random from the sample is a Democrat who favors the amendment.
Then
Total number of people surveyed is
Thus, the probability that person selected at random from the sample is a Democrat who favors the amendment is:
Chapter 9 Solutions
EBK PRECALCULUS W/LIMITS
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