The following table shows the consumer príce index for medical care in the U.S. for years since 1980. Year Price Index 74.9 4. 106.8 138.6 12 190.1 16 228.2 20 260.8 24 310.1 28 364.1 A scatter plot for the data follows. 400+ 375

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 12PPS
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The following table shows the consumer príce index for medical care in the U.S. for years since 1980.
Year
Price Index
74.9
4.
106.8
138.6
12
190.1
16
228.2
20
260.8
24
310.1
28
364.1
A scatter plot for the data follows.
400-
375
350-
325
300
275
250
225-
200
150
125
100
75
12 1S 18 21 24 27 30
Use the above scatter plot to decide whether a linear model fits the data well.
O A linear model fits the data well.
OA linear model does not fit the data well.
Let C(t) be the price index for a medical care for t years since 1980.
A linear model for the data is C(t) =
Use three declmals in your
answer.
Estimate the price Index in 2012.
Use one decimal in your answer.
Use the model to predict the year in which the price index will be 402.4.
Transcribed Image Text:The following table shows the consumer príce index for medical care in the U.S. for years since 1980. Year Price Index 74.9 4. 106.8 138.6 12 190.1 16 228.2 20 260.8 24 310.1 28 364.1 A scatter plot for the data follows. 400- 375 350- 325 300 275 250 225- 200 150 125 100 75 12 1S 18 21 24 27 30 Use the above scatter plot to decide whether a linear model fits the data well. O A linear model fits the data well. OA linear model does not fit the data well. Let C(t) be the price index for a medical care for t years since 1980. A linear model for the data is C(t) = Use three declmals in your answer. Estimate the price Index in 2012. Use one decimal in your answer. Use the model to predict the year in which the price index will be 402.4.
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