Concept explainers
a.
To find:the
a.
Answer to Problem 65E
Explanation of Solution
Given:
A survey of 4826 randomly selected young adults as in the given table:
Opinion | Female | Male | Total |
Almost no chance | 93 | 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 person is female. Now to find the probability that the result for “a good chance”.
Therefore,
Thus, the conditional probability becomes:
Hence,the probability that the result for “a good chance” is
b.
To find: the probability that the result for “a good chance” in the given table.
b.
Answer to Problem 65E
Explanation of Solution
Given:
A survey of 4826 randomly selected young adults as in the given table:
Opinion | Female | Male | Total |
Almost no chance | 93 | 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:
The objective is to find the probability that the result for “a good chance”.
Therefore,
c.
To check:whether the
c.
Answer to Problem 65E
Yes, independent.
Explanation of Solution
Given:
Calculation:
From part (a) and part (b),
There probability should be identical, thus they are independent.
Chapter 5 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Statistics for Psychology
Elementary Statistics: Picturing the World (6th Edition)
Elementary Statistics: Picturing the World (7th Edition)
Statistical Reasoning for Everyday Life (5th Edition)
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