Refer to Table 11-8. What is the minimum efficient scale of production?

If the demand curve is perfectly elastic, the elasticity coefficient is ____ and the curve is ____

a. zero, vertical b. infinity, horizontal c. zero, horizontal d. infinity, vertical

Some studies show that even students who earned high grades in science classes accept disproven explanations for scientific phenomena. These disproven explanations had been acquired prior to the science classes. These studies provide some support for which of the following systematic mistakes that people make?

a. people are overconfident b. people give too much weight to a small number of vivid observations c. people are reluctant to change their minds d. All of the above are correct.