When the government imposes a barrier to entry in a market,
a. more resources will be wasted by firms attempting to secure and maintain market power.
b. the options available to consumers will increase in the protected market.
c. allocative efficiency will be improved by the reduction of wasteful competition.
d. consumers will be better able to direct the smaller number of producers to serve their interests.
A
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a. greater than b. equal to c. less than
A consulting firm estimates the following quarterly sales forecasting model:Qt = a + bt +cDThe equation is estimated using quarterly data from 2005 I - 2015 III (t = 1,..., 43). The variable D is a dummy variable for the second quarter where: D = 1 in the second quarter, and 0 otherwise. The results of the estimation are: 
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