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Statistics help!
Consider a confidence interval. Explain whether the width of a newly calculated confidence interval would increase decrease or stay the same as the width of the original CI as a result of each of the following changes. How are and changes effected? List all changes. What components of a CI change under the following changes?
a. sample size is doubled from 400-800 b. population size is doubled from 5 million to 10 million c. confidence level is lowered from 95% to 90% d. significance level is lowered from 10% to 5% |
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Here's a site that may help:
Statistics Tutorial: Confidence Interval |
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