Economic costs include implicit costs but not explicit costs

Refer to the figure above. When the demand curve for gas is D1 and the supply curve for gas is S, the equilibrium price is:

A) $3. B) $5. C) $6. D) $8.

An economist is conducting a survey to evaluate a program launched by the government

He ends up collecting data on those households that were adversely affected by the program, reaffirming his own belief that the program has been largely unsuccessful. This is an example of a(n) ________. A) confirmation bias B) attentional bias C) attenuation bias D) distinction bias