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Answer:
Equation: y=2x+113.5
CPI in 1992 and 2001 are 117.5 and 135.5 respectively.
Step-by-step explanation:
Let x equal 0 correspond to 1990.
The cost of a typical package of consumer goods, stood at 113.5 in 1990 and 133.5 in 2000.
It is given that the data can be modeled by a straight. So, the line passes through (0,113.5) and (10,133.5).
The equation of line is
.... (1)
Therefore, the best liner equation that models the CPI is y=2x+113.5.
Note: The given options are incorrect.
We need to estimate the CPI in 1992 and 2001.
Substitute x=2 in equation (1), to find the CPI in 1992.
Substitute x=11 in equation (1), to find the CPI in 2001.
Therefore, the CPI in 1992 and 2001 are 117.5 and 135.5 respectively.