When using your calculator, write down what you used for inputs (functions stored in Y1 or Y2, window settings, input values for STAT or the Solver, etc.) and also indicate which features of the calculator you used (QuadReg, value, etc.).
1. The following table gives the size and cost of a line of Samsung LCD HDTV televisions.
|
Screen size (inches)
|
23
|
27
|
32
|
|
Cost ($)
|
250.00
|
340.00
|
420.00
|
(a) Name your variables (x, y, etc.) and find the best fitting linear model. (Round coefficients to the nearest hundredth.)
(b) What is the significance of the slope? Give a full explanation.
(c) Use your model to estimate the cost of the new 42 inch television.