Use the above scatter plot to decide whether the linear model fits the data well. O The function is not a good model for the data O The function is a good model for the data. Estimate the retails sales in the U. S. in 2015. billions of dollars. (Round to the nearest whole number. Hint: Subtract 2015 - 1995 to find t .) Use the model to predict the year in which retails sales will be $244 billion. |(Round down to state the year. Hint: add t + 1995 to find the year.)

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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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The following table shows retail sales in drug stores in billions of dollars in the U.S. for years since 1995.
Year
Retail Sales
85.851
3
108.426
141.781
169.256
12
202.297
15
222.266
Let S(t) be the retails sales in billions of dollars in t years since 1995. A linear model for the data is
S(t) = 9.44t + 84.182.
220
210-
200
190
180
170-
160
150
140
130
120
110
100
90
12
804
Transcribed Image Text:The following table shows retail sales in drug stores in billions of dollars in the U.S. for years since 1995. Year Retail Sales 85.851 3 108.426 141.781 169.256 12 202.297 15 222.266 Let S(t) be the retails sales in billions of dollars in t years since 1995. A linear model for the data is S(t) = 9.44t + 84.182. 220 210- 200 190 180 170- 160 150 140 130 120 110 100 90 12 804
Use the above scatter plot to decide whether the linear model fits the data well.
O The function is not a good model for the data
O The function is a good model for the data.
Estimate the retails sales in the U. S. in 2015.
billions of dollars. (Round to the nearest whole
number. Hint: Subtract 2015 - 1995 to find t .)
Use the model to predict the year in which retails sales will be $244 billion.
(Round down to
state the year. Hint: add t + 1995 to find the year.)
Transcribed Image Text:Use the above scatter plot to decide whether the linear model fits the data well. O The function is not a good model for the data O The function is a good model for the data. Estimate the retails sales in the U. S. in 2015. billions of dollars. (Round to the nearest whole number. Hint: Subtract 2015 - 1995 to find t .) Use the model to predict the year in which retails sales will be $244 billion. (Round down to state the year. Hint: add t + 1995 to find the year.)
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