Suppose That a Normal Model Describes the Acidity $( \mathrm { pH } )$

question 1

Multiple Choice

Suppose that a Normal model describes the acidity $( \mathrm { pH } )$ of rainwater, and that water tested after last week's storm had a z-score of $1.8$ . This means that the acidity of that rain ...

• A) varied with a standard deviation of \(1.8\).
• B) had a pH \(1.8\) higher than average rainfall.
• C) had a pH \(1.8\) standard deviations higher than that of average rainwater.
• D) had a \(\mathrm { pH }\) of \(1.8\).
• E) had a pH \(1.8\) times that of average rainwater.

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