March 1, 2017

Homework Help: AP Statistics

Posted by Anonymous on Monday, October 29, 2012 at 3:28pm.

When finding a confidence interval for a population mean based on a sample of size 11, which assumption is made?

The standard deviation is fixed.

The sampling distribution of z is normal.

The sampling distribution of the sample means is approximately normal.

There is no special assumption made.

I would think D, no special assumption.

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