Use the Data Given Below to Answer the Following Question(s)

question 47

Multiple Choice

Use the data given below to answer the following question(s) .
Following is an extract from the database of a construction company.The table shows the height of walls in feet and the cost of raising them.The estimated simple linear regression equation is given as Ŷ = b0 + b1X.(Hint: Use Excel functions) .
$$\begin{array} { | r | r | } \hline \begin{array} { l } \text { Height } \\\text { (ft) }\end{array} & \text { Cost (\$) } \\\hline 4 & 670 \\\hline 3 & 430 \\\hline 7 & 810 \\\hline 9 & 1100 \\\hline 6 & 790 \\\hline 8 & 880 \\\hline 5 & 760 \\\hline 11 & 1200 \\\hline\end{array}$$
-For a simple linear regression model, significance of regression is:

• A)a measure of how well the regression line fits the data.
• B)a hypothesis test of whether the regression coefficient ß1 is zero.
• C)a statistic that modifies the value of R² by incorporating the sample size and the number of explanatory variables in the model.
• D)the variability of the observed Y-values from the predicted values.

---

Definitions:

Permitted

Granted authorization or consent to do something within specified conditions or regulations.

Dual Circuit Foot Valve

A valve used in brake systems, offering two separate channels for brake fluid to ensure a backup in case one fails.

Relay Section

A segment of an electrical circuit designed to isolate and manage the flow of power through the use of relays.

Primary Piston

The main piston in a hydraulic or pneumatic system that is first to receive pressure from the fluid or air, translating that pressure into mechanical force.