The following table shows the total spent on research and development by industry in a country, in billions of dollars, for the period 2002-2012.

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The following table shows the total spent on research and development by industry in a country, in billions of dollars, for the period 2002-2012.
Year t
(years since 2000)
3
4
8
10
11
12
Spending ($ billion)
194
196
196
206
217
229
236
224
221
234
245
Find the logarithmic regression model of the form S(t) = A In(t) + C with coefficients A and C rounded to two decimal places.
S(t) =
Obtain a graph showing the data points and the regression curve.
S(t)
S(t)
S(t)
S(t)
250아
250
250
250
240-
240
240
240
230
230
230
230
220
220
220
220
210
210
210
210
200
200
200
200
12
6.
8
10
12
14
2
4
6
10
12
14
6.
8
10
12
14
12
6.
8.
10
12
14
In which direction is it more reasonable to extrapolate the model? Why?
O Extrapolating in the negative direction is more reasonable because it results in a prediction of ever-decreasing R&D expenditures by industry in the past. Extrapolating in the positive direction eventually leads to negative values, which do not model reality.
O Extrapolating in the negative direction is more reasonable because it results in a prediction of negative R&D expenditures by industry in the past. Extrapolating in the positive direction eventually leads to ever-increasing values, which do not model reality.
Extrapolating in the positive direction is more reasonable because it results in a prediction of ever-increasing R&D expenditures by industry in the future. Extrapolating in the negative direction eventually leads to negative values, which do not model reality.
O Extrapolating in the positive direction is more reasonable because it results in a prediction of decreasing R&D expenditures by industry in the future. Extrapolating in the negative direction eventually leads to negative values, which do not model reality.
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Transcribed Image Text:The following table shows the total spent on research and development by industry in a country, in billions of dollars, for the period 2002-2012. Year t (years since 2000) 3 4 8 10 11 12 Spending ($ billion) 194 196 196 206 217 229 236 224 221 234 245 Find the logarithmic regression model of the form S(t) = A In(t) + C with coefficients A and C rounded to two decimal places. S(t) = Obtain a graph showing the data points and the regression curve. S(t) S(t) S(t) S(t) 250아 250 250 250 240- 240 240 240 230 230 230 230 220 220 220 220 210 210 210 210 200 200 200 200 12 6. 8 10 12 14 2 4 6 10 12 14 6. 8 10 12 14 12 6. 8. 10 12 14 In which direction is it more reasonable to extrapolate the model? Why? O Extrapolating in the negative direction is more reasonable because it results in a prediction of ever-decreasing R&D expenditures by industry in the past. Extrapolating in the positive direction eventually leads to negative values, which do not model reality. O Extrapolating in the negative direction is more reasonable because it results in a prediction of negative R&D expenditures by industry in the past. Extrapolating in the positive direction eventually leads to ever-increasing values, which do not model reality. Extrapolating in the positive direction is more reasonable because it results in a prediction of ever-increasing R&D expenditures by industry in the future. Extrapolating in the negative direction eventually leads to negative values, which do not model reality. O Extrapolating in the positive direction is more reasonable because it results in a prediction of decreasing R&D expenditures by industry in the future. Extrapolating in the negative direction eventually leads to negative values, which do not model reality. Need Help? Read It
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