Concept explainers
To find: The interval that is expected to cover 81.5% of all GPAs for all the college students
Answer to Problem 4PT3
The interval is (1.9, 3.7)
Explanation of Solution
Given:
Formula used:
The formula to compute the z score is:
Calculation:
The probability is calculated as:
Thus, the interval (1.9, 3.7) has the probability is 0.8185.
Hence, the correct option is (c).
Chapter 10 Solutions
The Practice of Statistics for AP - 4th Edition
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