Consider a Normally Distribution Population with Known Variance

question 156

Multiple Choice

Consider a normally distribution population with known variance.A 95% confidence interval is computed based on sample of 25 observations.If we take a new sample of 100 observations and compute a second 95% confidence interval based on the new sample,we know that the width of the second confidence interval will be exactly ____ times the width of the first confidence interval.

• A)2
• B)0.5
• C)4
• D)0.25
• E)We cannot answer this question without knowing the sample means from both samples.

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