Question: We have calculated a95% confidence interval and would prefer for our next confidence interval to have a smaller margin of error without losing any confidence.

We have calculated a95% confidence interval and would prefer for our next confidence interval to have a smaller margin of error without losing any confidence. In order to dothis, which of the following statements isTRUE?

I. we can change thez- value to a smaller number.

II. we can take a larger sample.

III. we can take a smaller sample.

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