Widening the confidence interval from 95% to 99% increases the _____ but decreas

Question

Widening the confidence interval from 95% to 99% increases the _____ but decreases the _____ a. precision: reliability b. precision: confidence c. confidence: precision d. accuracy: precision e. accuracy: confidence Because population parameters are typically unknown, we use the _____ to estimate the value of the standard error. a. Sample standard deviation b. Population standard deviation c. Sample proportion d. Population proportion e. Population mean. The radius of a confidence interval is called the: a. Standard deviation. b. Confidence level. c. Population parameter d. Margin of error. e. None of the above.

Explanation / Answer

6) Option (c) , Confidence, Precision

7) Option (a), Sample standard deviation

8) Option (d), Margin of error

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