The Common Cricket Can Be Used as a Crude Thermometer

question 25

Multiple Choice

The common cricket can be used as a crude thermometer. The colder the temperature, the slower the rate of chirping. The table below shows the average chirp rate of a cricket at various temperatures. $\begin{array} { c c } \hline \begin{array} { c } \text { Chirp Rate } \\\text { (chirps/second) }\end{array} & \begin{array} { c } \text { Temperature } \\\left( { } ^ { \circ } \mathrm { F } \right) \end{array} \\\hline 3.7 & 67.8 \\2.6 & 64.6 \\1.9 & 55.1 \\1.8 & 44.3 \\3.9 & 71 \\2.8 & 67.8 \\\hline\end{array}$
Compute the least-squares regression line for predicting the temperature from the chirp rate.

• A) y=9.9492+34.0748 x
• B) y=12.7143+34.0748 x
• C) y=34.0748+12.7143 x
• D) y=34.0748+9.9492 x

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