Concept explainers
To explain:whether the decisions of friend is correct or not
Answer to Problem 21E
Here, the probability to reach goal is greatest when Routine B is used. So, the routine should be B and the friend is correct.
Explanation of Solution
Given:
Calculation:
Use the findings to make a two-way table that shows joints and marginal relative frequencies. There are a total of
Results | |||
Reached goal | Does not reach goal | Total | |
Routine A | |||
Routine B | |||
Routine C | |||
Total |
Find conditional probability by dividing each joint relative frequency in the “reach goal” column by the marginal relative frequency in its corresponding row.
Based on the sample, the probability that goal reached is greatest when Routine B is used. Therefore, the routine should be B.
Conclusion:
Therefore, the probability to reach goal is greatest when Routine B is used. So, the routine should be B and the friend is correct.
Chapter 10 Solutions
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