Chapter 9.3, Problem 9.41E

To determine

To find four ideas of given section.

Explanation of Solution

There are four main ideas given in section which are related to inference.

1.Design sample: Simple random sample or not, sources of bias

2.Behavior confidence interval: Interpretation confidence level, Effect confidence level on width confidence interval, Effect sample size on with confidence interval.

3.Meaning statistical significance

4. Requirements methods: All requirements of the used methods should be satisfied.

Therefore, the big idea, that the company is addressing, is the design of the sample. Because the company mentions that the bags are filled by weight, which might result in the bags not being random samples and thus this could strongly affect the M&M's color distribution.