Six Measurements Were Made of the Magnesium Ion Concentration (In $\begin{array}{llllll}\hline 189 & 175 & 140 & 188 & 179 & 211 \\\hline\end{array}$

question 86

Multiple Choice

Six measurements were made of the magnesium ion concentration (in parts per million, o in a city's municipal water supply, with the following results. It is reasonable to assume th population is approximately normal.
$\begin{array}{llllll}\hline 189 & 175 & 140 & 188 & 179 & 211 \\\hline\end{array}$

Construct a $98 \%$ confidence interval for the mean magnesium ion concentration.

• A) \(176.4 < \mu < 184.3\)
• B) \(148.3 < \mu < 212.4\)
• C) \(145.2 < \mu < 215.5\)
• D) \(176.7 < \mu < 184.0\) )

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Definitions:

Oligopoly

A market structure characterized by a small number of firms controlling a large majority of the market share.

Quantity Effect

The impact on total revenue when the quantity sold changes while the price remains the same.

Marginal Cost

The increased expenditure resulting from making an additional unit of a product or service.

Oligopoly

A market structure characterized by a small number of firms that have significant market power, leading to limited competition.