A 98% Confidence Interval Estimate for a Population Mean $\mu$ Is Determined to Be 75

question 87

Multiple Choice

A 98% confidence interval estimate for a population mean $\mu$ is determined to be 75.38 to 86.52.If the confidence level is reduced to 90%,the confidence interval for $\mu$ :

• A) Becomes wider.
• B) Remains the same.
• C) Becomes narrower.
• D) None of these answers is correct.