13. A confidence interval is affected by the confidence level and the sample size. If the confidence level is decreased from 99% to 95% and the sample size is increased from 200 to 400, what happens to the confidence interval estimate? A. It expands and becomes a larger interval B. It contracts and becomes a smaller interval C. It stays the same D. Can't tell

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13. A confidence interval is affected by the confidence level and the sample size. If the
confidence level is decreased from 99% to 95% and the sample size is increased from 200 to
400, what happens to the confidence interval estimate?
A. It expands and becomes a larger interval
B. It contracts and becomes a smaller interval
C. It stays the same
D. Can't tell
Transcribed Image Text:13. A confidence interval is affected by the confidence level and the sample size. If the confidence level is decreased from 99% to 95% and the sample size is increased from 200 to 400, what happens to the confidence interval estimate? A. It expands and becomes a larger interval B. It contracts and becomes a smaller interval C. It stays the same D. Can't tell
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