Consider a competitive market for which the quantities demanded and supplied (per year) at various prices are given as follows:
Price (dollars) Demand (millions) Supply (millions)
60 22 14
80 20 16
100 18 18
120 16 20
a. Calculate the price elasticity of demand when the price is $80 and when the price is $100.
b. Calculate the price elasticity of supply when the price is $80 and when the
price is $100.
c. What are the equilibrium price and quantity ?
d. Suppose the government sets a price ceiling of $80. Will there be a shortage,
and if so, how large will it be ?

The lee family is looking to buy a house in one of two suburban areas just outside of a major city, and air quality is a top priority for them. overall air quality is calculated by taking measures in 100 locations within each suburb and then calculating a measure of central tendency. in one suburb, there is a major bus station that creates very poor air quality at its location but has no impact in the surrounding parts of the suburb. in this situation, which measure of overall suburb air quality would be most useful?

crow design, inc. is a web site design and consulting firm. the firm uses a job order costing system in which each client is a different job. crow design assigns direct labor, licensing costs, and travel costs directly to each job. it allocates indirect costs to jobs based on a predetermined overhead allocation rate, computed as a percentage of direct labor costs. direct labor hours (professional) 6,250 hours direct labor costs ($1,800,000 support staff salaries ,000 computer ,000 office ,000 office ,000 in november 2012, crow design served several clients. records for two clients appear here: delicious treats mesilla chocolates direct labor 700 hours 100 hours software licensing $ 4,000 $400 travel costs 8,000 1. compute crow design’s direct labor rate and its predetermined indirect cost allocation rate for 2012. 2. compute the total cost of each job. 3. if simone wants to earn profits equal to 50% of service revenue, how much (what fee) should she charge each of these two clients? 4. why does crow design assign costs to jobs?

Russell's study compared gpa of those students who volunteered for academic study skills training and those who did not elect to take the training. he found that those who had the training also had higher gpa. with which validity threat should russell be most concerned?