Using an $\alpha$ = 0.04, a confidence interval for a population proportion is determined to be 0.65 to 0.75. If the level of significance is decreased, the interval for the population proportion
A)becomes narrower
B)becomes wider
C)does not change
D)Not enough information is provided to answer this question.

Question

Quizplus · Accepted Answer

Decreasing the level of significance (increasing the confidence level) results in a wider confidence interval, as it requires more certainty that the interval contains the true population proportion.

Using An α\alphaα = 004, a Confidence Interval for a Population Proportion Is Determined

Using An $\alpha$ = 004, a Confidence Interval for a Population Proportion Is Determined