Answer the following statement(s) true (T) or false (F)

1. The ? level itself is never used in the formula for the confidence interval. It is simply used to help determine the critical value.
2. It can be assumed that a mean or standard deviation in a sample is an exact match to the mean or standard deviation in the population because often sample statistics are very similar, if not identical, to their corresponding population parameters.
3. A 99% confidence level would produce a confidence interval that has a greater chance than a 95% confidence level of being correct but would be wider and less precise.
4. In calculations for a confidence interval involving proportions, it is a reasonably safe bet that the z distribution can be used as long as the sample is large and contains at least five successes and at least five failures.


1. True
2. False
3. True
4. True

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Fill in the blank(s) with correct word

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Matching

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a. external classification b. internal classification c. reclassification d. initial classification

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Based on the information presented in the text, Tammy's frustration regarding the goals of her work could be due to _________

a. an unclear mission b. boredom c. her need to micromanage d. her ongoing issues in her personal life

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