Techniques for estimating demand curves using direct observations from the marketplace are part of a family of statistical techniques referred to as:

Refer to Figure 4-8. What is the value of consumer surplus after the imposition of the ceiling?

A) $120,000 B) $230,000 C) $270,000 D) $430,000

Refer to the above figures. An external cost exists. This will lead to a(n)

A) underproduction equal to Q1 minus Q2. B) overproduction equal to Q4 minus Q3. C) underproduction equal to Q4 minus Q3. D) overproduction equal to Q1 minus Q2.