Which is not true of the zα,formula for a population percentage estimation?
A)The z stands for the z value for the level of confidence.
B)The z value will typically be for a 95% or 99% level of confidence.
C)The a equals the sample percentage.
D)The a will typically be for a 95% or 99% level of confidence.
E)The z value will normally correspond to ±1.96 or ±2.58 standard errors.

Question

Quizplus · Accepted Answer

The a in the zα formula does not represent the sample percentage but rather the margin of error or maximum allowable error. The correct formula is zα/2 * √(p(1-p)/n) = a, where z is the z value for the level of confidence (usually 1.96 for 95% and 2.58 for 99%), α is the significance level (usually 0.05 or 0.01), p is the estimated population proportion, n is the sample size, and a is the maximum allowable error or margin of error.

Which Is Not True of the Zα,formula for a Population