Find the margin of error for the given confidence level and values of x and n. x = 80, n = 146, confidence level 99%
Solution :
Given that,
Point estimate = sample proportion =
= x / n = 80 / 146 = 0.548
1 -
= 1 - 0.548 = 0.452
Z/2
= 2.576
Margin of error = E = Z
/ 2 *
((
* (1 -
)) / n)
= 2.576 * (((0.548
* 0.452) / 146)
Margin of error = E = 0.106
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