The data below are ages and systolic blood pressures (measured in millimeters of mercury) of 9 randomlyselected adults. Find the equation of the regression line for the given data. What would be the predictedpressure if the age was 60? Round the predicted pressure to the nearest whole number. Round the regressionline values to the nearest hundredth. $\begin{array}{l|c|c|c|c|c|c|c|c|c|}
\text { Age, } \mathrm{x} & 38 & 41 & 45 & 48 & 51 & 53 & 57 & 61 & 65 \
\hline \text { Pressure, } \mathrm{y} & 116 & 120 & 123 & 131 & 142 & 145 & 148 & 150 & 152
\end{array}$
A) $\hat { y } = 1.49 x + 60.46 ; 150 \mathrm {~mm}$
B) $\hat { y } = 60.46 \mathrm { x } - 1.49 ; 3626 \mathrm {~mm}$
C) $\hat { y } = 1.49 \mathrm { x } - 60.46 ; 29 \mathrm {~mm}$
D) $\hat{ y } = 60.46 \mathrm { x } + 1.49 ; 3629 \mathrm {~mm}$

Question

Quizplus · Accepted Answer

The correct equation of the regression line is found by calculating the slope and intercept from the given data, which results in $\hat { y } = 1.49 x + 60.46$. Using this equation to predict the pressure for an age of 60 gives a value of approximately 150 mmHg when rounded to the nearest whole number.

The Data Below Are Ages and Systolic Blood Pressures (Measured