FORESTRY
AGRICULTURAL STATISTICS AND ECONOMICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Given the same mean, SD, and sample size, a confidence interval of 80% would be wider than a confidence interval of 90%
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -The confidence interval with a confidence level of 95% will be wider than that of 80% because the margin of error will be greater and with a wider confidence level, the interval is more imprecise.
Detailed explanation-2: -3) a) A 90% Confidence Interval would be narrower than a 95% Confidence Interval. This occurs because the as the precision of the confidence interval increases (ie CI width decreasing), the reliability of an interval containing the actual mean decreases (less of a range to possibly cover the mean).
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