A 90% Confidence Interval Is Constructed for the Population Mean

question 92

Multiple Choice

A 90% confidence interval is constructed for the population mean. If a 95% confidence interval had been constructed instead (everything else remaining the same) , the width of the interval would have been ________ and the probability of making an error would have been ________.

• A) wider; bigger
• B) wider; smaller
• C) narrower; bigger
• D) narrower; smaller

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