In a Study of Reaction Times, the Time to Respond $( x )$

question 6

Multiple Choice

In a study of reaction times, the time to respond to a visual stimulus $( x )$ and the time to respond to an auditory stimulus $( y )$ were recorded for each of 6 subjects. Times were measured in thousandths of a second. The results are presented in the following table.
The following MINITAB output describes the fit of a linear model to these data. Assume assumptions of the linear model are satisfied.
The regression equation is
Auditory $= 240.686515 + 0.109829$ Visual
$\begin{array} { l l l l l } \text { Predictor } & \text { Coef } & \text { SE Coef } & \text { T } & \text { P } \\ \text { Constant } & 240.686515 & 14.271226 & 16.865161 & 0.000073 \\ \text { Visual } & 0.109829 & 0.066275 & 1.657159 & 0.172829 \end{array}$
What is the intercept of the least-squares regression line?

• A) 0.109829
• B) 0.066275
• C) 16.865161
• D) 240.686515

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