Chapter 4, Problem 7E

(a)

To determine

To Explain: this distribution.

Explanation of Solution

Given:

  

By seeing this distribution, it is observed that the distribution is divided into 2 part and having two peaks. At 24 and 28 percent there is a break; the bars look to gather in two groups before and after the break.

(b)

To determine

To Explain: the about this shape.

Explanation of Solution

Given:

  

Yes, it is likely because of two types of cereal: normal and low sugar.

There appears to be a group of cereals gathering in a high sugar area and one gathering in a low sugar area. It is likely and plausible that there are two general kinds of cereal-one with low sugar content and advertised as such, and one with normal sugar content.