The width of a confidence interval decreases as the sample size increases and increases as the confidence level increases.

The width of a confidence interval increases as the sample size increases and increases as the confidence level increases.

The width of a confidence interval decreases as the sample size increases and increases as the confidence level decreases.

The width of a confidence interval increases as the sample size increases and increases as the confidence level decreases.

The width of a confidence interval does not change as the sample size increases and increases as the confidence level increases.

In the long run, of all confidence intervals calculated from the same population will contain the true mean height.

of boys' heights fall with the interval Jim calculated.

There is a chance that Jim's interval contains the true mean height.

of all possible sample means fall within Jim's interval.

More information is needed.

In the long run, of all confidence intervals calculated from the same population will contain the true mean height.

of boys' heights fall with the interval Jim calculated.

There is a chance that Jim's interval contains the true mean height.

of all possible sample means fall within Jim's interval.

More information is needed.

The width of a confidence interval decreases as the sample size increases and increases as the confidence level increases.

The width of a confidence interval increases as the sample size increases and increases as the confidence level increases.

The width of a confidence interval decreases as the sample size increases and increases as the confidence level decreases.

The width of a confidence interval increases as the sample size increases and increases as the confidence level decreases.

The width of a confidence interval does not change as the sample size increases and increases as the confidence level increases.