A machine with specialized bolt manufacturing components labelled A to H produces bolts with varying weight Y grams, when the volume of the raw metal used is X cm³. G H A Manufacturing Component Bolt...


A machine with specialized bolt manufacturing components labelled A to H<br>produces bolts with varying weight Y grams, when the volume of the raw metal<br>used is X cm³.<br>G H<br>A<br>Manufacturing<br>Component<br>Bolt<br>B<br>D<br>Е F<br>1.0<br>1.5 2.0<br>|2.5<br>3.0<br>3.5<br>| 4.0 4.5<br>Y<br>3.9<br>4.4<br>5.8<br>6.6<br>7.0<br>7.1<br>7.3 7.7<br>(а)<br>Plot a scatter diagram for weight Y, against volume X<br>(b) Calculate the equation of the least squares regression line Yon X<br>(c) Estimate the weight of a bolt produced from a component when the volume<br>of the metal used is 3.2cm3<br>(d) Indicate why it may not be appropriate to use your equation to predict the<br>weight of a metal of volume 20cm³.<br>

Extracted text: A machine with specialized bolt manufacturing components labelled A to H produces bolts with varying weight Y grams, when the volume of the raw metal used is X cm³. G H A Manufacturing Component Bolt B D Е F 1.0 1.5 2.0 |2.5 3.0 3.5 | 4.0 4.5 Y 3.9 4.4 5.8 6.6 7.0 7.1 7.3 7.7 (а) Plot a scatter diagram for weight Y, against volume X (b) Calculate the equation of the least squares regression line Yon X (c) Estimate the weight of a bolt produced from a component when the volume of the metal used is 3.2cm3 (d) Indicate why it may not be appropriate to use your equation to predict the weight of a metal of volume 20cm³.

Jun 10, 2022
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