Concept explainers
To find: The number of athletes.
Answer to Problem 3PT3
The number of athletes is 1680.
Explanation of Solution
Given:
Margin of error ( E ) = ±2%
Confidence level = 90%
Formula used:
The formula to compute the
Calculation:
Assume population proportion ( p ) to be 0.05.
From standard normal table, the z -score at 90% confidence level is 1.645.
The number of athletes can be computed as:
Hence, the correct option is (c).
Chapter 10 Solutions
The Practice of Statistics for AP - 4th Edition
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