A Study Found the Following Parts Per Billion of Nitrosamines

question 90

Essay

A study found the following parts per billion of nitrosamines in a sample of domestic beers. (a) Construct a frequency distribution of four classes with equal class sizes. (b) Construct another frequency distribution of four classes using unequal class intervals or an open-ended interval for the highest class. (c) Which frequency distribution is preferable? Why?
$$\begin{array} { c c c c } 1.00 & 1.72 & 2.51 & 4.21 \\1.05 & 1.88 & 2.61 & 4.50 \\1.17 & 2.16 & 2.84 & 6.36 \\1.50 & 2.23 & 2.96 & 6.70 \\1.63 & 2.26 & 2.99 & 6.72 \\1.70 & 2.45 & 3.41 & 15.75\end{array}$$

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Definitions:

Barriers to Entry

These are obstacles that prevent new competitors from easily entering an industry or area of business.

Oligopoly

A market structure characterized by a small number of firms that have significant control over market prices and competition.

Interdependence

The mutual reliance among businesses, individuals, industries, or economies, where the actions of one participant affect the outcomes of another.

Rivals

Competitors within the same industry or market that vie for the same customer base.