FORESTRY
AGRICULTURAL STATISTICS AND ECONOMICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following does NOT have an affect on the width of a confidence interval?
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Sample mean
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Confidence Level
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Sample standard deviation
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Sample size
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Explanation:
Detailed explanation-1: -The population size does not alter the ‘width of a ‘confidence interval’ for a ‘population proportion.
Detailed explanation-2: -There are three factors that determine the size of the confidence interval for a given confidence level. These are: sample size, percentage and population size. The larger your sample, the more sure you can be that their answers truly reflect the population.
Detailed explanation-3: -A narrow confidence interval enables more precise population estimates. The width of the confidence interval is a function of two elements: Confidence level. Sampling error.
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