To find: the percentage of all adults go to health club at least twice a week.
Answer to Problem 81E
The percentage of all adults go to health club at least twice a week is
Explanation of Solution
Given:
10% of the adults belongs to health club and 40% of these health club at least twice a week.
Concept used:
Definition of conditional probability:
Calculation:
According to question,
Use the definition of conditional probability:
Thus, it obtained:
Hence, the percentage of all adults go to health club at least twice a week is
Chapter 5 Solutions
The Practice of Statistics for AP - 4th Edition
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