Answered: Year t 0 1 2 3 4 iPod Sales S…

Year t 0 1 2 3 4 iPod Sales S (millions) 22.6 39.4 51.9 54.8 54.8 (a) Find a quadratic regression model for these data. (Round coefficients to three significant digits.) S(t) =

Trigonometry (MindTap Course List)

8th Edition

ISBN:9781305652224

Author:Charles P. McKeague, Mark D. Turner

Publisher:Charles P. McKeague, Mark D. Turner

Chapter4: Graphing And Inverse Functions

Section: Chapter Questions

Problem 6GP: If your graphing calculator is capable of computing a least-squares sinusoidal regression model, use...

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Question

Year t	0	1	2	3	4
iPod Sales S (millions)	22.6	39.4	51.9	54.8	54.8

(a)

Find a quadratic regression model for these data. (Round coefficients to three significant digits.)

S(t) =

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Table 2 shows a recent graduate’s credit card balance each month after graduation. a. Use exponential regression to fit a model to these data. b. If spending continues at this rate, what will the graduate’s credit card debt be one year after graduating?
If your graphing calculator is capable of computing a least-squares sinusoidal regression model, use it to find a second model for the data. Graph this new equation along with your first model. How do they compare?
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