Concept explainers
a.
To find: the
a.
Answer to Problem 72E
Explanation of Solution
Given:
The distribution of the adjusted goes income reported on individual federal income tax returns in recent year:
Income | |||||
Probability | 0.431 | 0.248 | 0.215 | 0.100 | 0.006 |
Concept used:
Calculation:
Apply addition rule for mutually exclusive events:
Add the corresponding probabilities:
Hence, the probability that a randomly chosen returns is
b.
To find: the conditional probability that the income is at least $100,000.
b.
Answer to Problem 72E
Explanation of Solution
Given:
The distribution of the adjusted goes income reported on individual federal income tax returns in
recent year:
Income | |||||
Probability | 0.431 | 0.248 | 0.215 | 0.100 | 0.006 |
Concept used:
Definition condition probability:
Calculation:
Result from part (a):
Definition condition probability:
Hence, the conditional probability that the income is at least $100,000 is
Chapter 5 Solutions
The Practice of Statistics for AP - 4th Edition
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