Question: Go to artofstat.com, click on WebApps and open the Explore Coverage app.Change the tab on top of the graph to Confidence Interval for a Mean.

Go to artofstat.com, click on WebApps and open the Explore Coverage app.Change the tab on top of the graph to Confidence Interval for a Mean. Change the Population Distribution to Bell-shaped and use the default mean=50 and standard deviation=10.

Under "Choose confidence level (in %)"set it at95% the default.

Under "Select sample size (n)" usen=10.Under "Select how many samples (of size n) you want to draw from the population" select 100.

Click on "Draw sample(s)" and note that 100confidence intervals appear under the population graph.

Go back and change the sample size ton = 25.

What happens to the widthof the interval as the sample size increases from n = 10 to n = 25?

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