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Six Measurements Were Made of the Magnesium Ion Concentration (In 202164157177113213\begin{array}{llllll}\hline 202 & 164 & 157 & 177 & 113 & 213 \\\hline\end{array}

Question 29

Multiple Choice

Six measurements were made of the magnesium ion concentration (in parts per million, or ppm) in a city's municipal water supply, with the following results. It is reasonable to assume that the population is approximately normal.
202164157177113213\begin{array}{llllll}\hline 202 & 164 & 157 & 177 & 113 & 213 \\\hline\end{array}
Based on a 98% confidence interval for the mean magnesium ion concentration, is it reasonable to believe that the mean magnesium ion concentration may be greater than 195? (Hint: you should first calculate the 98% confidence interval for the mean magnesium ion concentration.)


A) The likelihood cannot be determined.
B) No\mathrm { No }
C) Yes

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