I. A 95% confidence interval would give us -compared with a 99% confidence inter

Question

I. A 95% confidence interval would give us -compared with a 99% confidence interval. (1 point) a. wider range, more information b. wider range, less information c. narrower range, more information d. narrower range, less information 2. Assuming all the other conditions remain constant, if the sample size gets larger, the confidence interval will be (1 point) a. wider b. narrower c. as wide as before 3. Assuming all the other conditions remain constant, if the standard deviation gets larger, the confidence interval will be . (1 point) a. wider b. narrower c. as wide as before 4. Assuming all the other conditions remain constant, if the sample mean gets larger, the confidence interval will be(1 point) a. wider b. narrower c. as wide as before

Explanation / Answer

1) option D is right

A 95% confidence interval would give us narrower range, less information compared with a 99% confidence interval.

A 99% confidence interval is wider than a 95%. Therefore, it's more likely that it will contain the true value. See the distinction above between precise and accurate

2) The right answer is narrower

As the margin of error is inversely proportional to the sample size.

3) The right answer is (a)

The confidence interval will be wider as the margin of error is directly proportional to the standard deviation.

4) option C is right

The confidence interval will remain the same

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