Explanation Calculation: Calculate the best model of the form y = a x 2 + b x + c where the boat speed is y and engine speed is x as follows, Use online graphing calculator and obtain the graph that shows the curve represented by the quadratic regression equation as shown below in Figure 1, Figure 1 From Figure 1, it is observed that the curve of quadratic regression equation touches the data points. Thus, the quadratic regression function is y = 1.4 × 10 − 6 x 2 − 0.00266 x + 5.4 . Calculate the boat speed at an engine speed of 3,100 revolutions per minute as follows. Substitute x = 3 , 100 in y = 1

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ISBN: 9780135961438

Author: Barnett

Publisher: PEARSON CO

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Chapter 1.3, Problem 89E

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To find: The quadratic regression equation and estimate the boat speed at an engine speed of 3,100 revolutions per minute.

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Chapter 1.3, Problem 88E

Chapter 1.3, Problem 90E

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The quadratic regression equation and estimate the boat speed at an engine speed of 3,100 revolutions per minute.

Solution Summary: The author explains the quadratic regression equation and calculates the boat speed at an engine speed of 3,100 revolutions per minute.

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To find: The quadratic regression equation and estimate the boat speed at an engine speed of 3,100 revolutions per minute.

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