Increasing the confidence coefficient from .90 to .95 and decreasing the sample size from 100 to 50 has unknown impact on the margin of error.

Question

Quizplus · Accepted Answer

Increasing the confidence coefficient increases the margin of error because a higher confidence level means a wider interval to be more certain of capturing the true parameter. Decreasing the sample size increases the margin of error because a smaller sample provides less information about the population, making the estimate less precise. Thus, both actions would generally increase the margin of error, not have an unknown impact.

Increasing the Confidence Coefficient from