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The Data in the Table Represent the Amount of Pressure

Question 25

Multiple Choice

The data in the table represent the amount of pressure (psi) exerted by a stamping machine (x) , and the amount of scrap brass shavings (in pounds) that are collected from the machine each hour (y) .
Also shown below are the outputs from two different statistical technologies (TI-83/84 Calculator and Excel) . A scatterplot of the data confirms that there is a linear association. Report the equation for predicting scrap brass shavings using words such as scrap, not x and y. State the slope and
Intercept of the prediction equation. Round all calculations to the nearest thousandth. xy2.002.307.8015.1414.5128.652.804.154.016.356.2110.5211.8424.055.118.7511.6722.228.7017.02\begin{array}{|c|r|}\hline x & y \\\hline 2.00 & 2.30 \\\hline 7.80 & 15.14 \\\hline 14.51 & 28.65 \\\hline 2.80 & 4.15 \\\hline 4.01 & 6.35 \\\hline 6.21 & 10.52 \\\hline 11.84 & 24.05 \\\hline 5.11 & 8.75 \\\hline 11.67 & 22.22 \\\hline 8.70 & 17.02 \\\hline\end{array}

T-Test
y=a+bxa=2.018775528b=2.134464237r2=.996074796r=.998035467\begin{array} { l } y = a + b x \\a = - 2.018775528 \\b = 2.134464237 \\r ^ { 2 } = .996074796 \\r = .998035467\end{array}

\multicolumn1c Coefficients  Intercept 2.018775528 X Variable 1 2.134464237\begin{array}{|l|r|}\hline & \multicolumn{1}{|c|}{\text { Coefficients }} \\\hline \text { Intercept } & -2.018775528 \\\hline \text { X Variable 1 } & 2.134464237 \\\hline\end{array}


A) scrap =2.019+2.134= - 2.019 + 2.134 (pressure) ; slope =2.019= - 2.019 and the intercept is 2.1342.134 .
B) scrap =2.1342.019= 2.134 - 2.019 (pressure) ; slope =2.019= - 2.019 and the intercept is 2.1342.134 .
C) scrap =2.019+2.134= - 2.019 + 2.134 (pressure) ; slope =2.134= 2.134 and the intercept is 2.019- 2.019 .
D) scrap =2.1342.019= 2.134 - 2.019 (pressure) ; slope =2.134= 2.134 and the intercept is 2.019- 2.019 .

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