12 . Problems and Applications Q6

Which of the following situations illustrate the problem of substitution bias in the construction of the CPI?Check all that apply.

____The invention of cell phones

____Increased personal computer purchases in response to a decline in their price

_____More scoops of raisins in each package of Raisin Bran

____Greater use of fuel-efficient cars after gasoline prices increase

____The introduction of air bags in cars