You collect a random sample of size n from a population; from the data collected, you compute a 95% confidence interval for the mean of the population. Which of the following would produce a new confidence interval with larger width (larger margin of error) based on these same data?

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Quizplus · Accepted Answer

Using a larger confidence level increases the width of the confidence interval because it requires capturing more of the population mean with greater certainty, thus expanding the margin of error.

You Collect a Random Sample of Size N from a Population;