Concept explainers
a.
To find:the
a.
Answer to Problem 63E
Explanation of Solution
Given:
A survey of 4826 randomly selected young adults as in the given table:
Opinion | Female | Male | Total |
Almost no chanced | 96 | 98 | 194 |
Some chance but probably not | 426 | 286 | 712 |
A 50-50 chance | 696 | 720 | 1416 |
A good chance | 663 | 758 | 1421 |
Almost certain | 486 | 597 | 1083 |
Total | 2367 | 2459 | 4826 |
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 selcted person is male. Now to find the probability that the result for “almost certain”.
Therefore,
Thus, the conditional probability becomes:
Hence, the probability that the result for “almost certain” is
b.
To find: the probability that the result for “some chance but probability not” in the given table.
b.
Answer to Problem 63E
Explanation of Solution
Given:
A survey of 4826 randomly selected young adults as in the given table:
Opinion | Female | Male | Total |
Almost no chanced | 96 | 98 | 194 |
Some chance but probably not | 426 | 286 | 712 |
A 50-50 chance | 696 | 720 | 1416 |
A good chance | 663 | 758 | 1421 |
Almost certain | 486 | 597 | 1083 |
Total | 2367 | 2459 | 4826 |
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 selcted person is female. Now to find the probability that the result for “some chance but probability not”.
Therefore,
Thus, the conditional probability becomes:
Hence, the probability that the result for “some chance but probability not” is
Chapter 5 Solutions
The Practice of Statistics for AP - 4th Edition
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