Question

Help Please!

Answer 1

The sample sizes increase, then the width of the confidence interval decreases. Therefore, option D is the correct answer.

Given that, Raul is analyzing a set of data he collected and creating a confidence interval.

What is a confidence interval?

The confidence interval is the range of values that you expect your estimate to fall between a certain percentage of the time if you run your experiment again or re-sample the population in the same way.

The confidence level is the percentage of times you expect to reproduce an estimate between the upper and lower bounds of the confidence interval, and is set by the alpha value.

If the sample sizes increase, then the width of the confidence interval decreases.

If the sample sizes decrease, then the width of the confidence interval increases.

Confidence interval $CI=\overline{x}\pm z\frac{s}{\sqrt{n} }$

The sample sizes increase, then the width of the confidence interval decreases. Therefore, option D is the correct answer.

To learn more about the confidence interval visit:

brainly.com/question/14041846.

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