Question

question number 9. suppose that the lsrl for the appraised value (in thousands of dollars) and number of rooms for houses in east meadow, new york is 𝑦 = 19.718𝑥 + 74.80. predict the price of a 9 - room house (in thousands of dollars).
370.262
756.786
257.262
362.262
252.262
none of the above

Explanation:

Step1: Identify the linear - regression equation and the value of x

The least - squares regression line (LSRL) is \(y = 19.718x+74.80\), and we want to predict the price for a 9 - room house, so \(x = 9\).

Step2: Substitute \(x = 9\) into the equation

\[

$$\begin{align*} y&=19.718\times9 + 74.80\\ &=177.462+74.80\\ &=252.262 \end{align*}$$

\]

Answer:

252.262