Use the following to answer questions : 
-(Table: Competitive Market for Good Z) Look at the table Competitive Market for Good Z. The equilibrium price and quantity in this market are, respectively:
Definitions:
Voluntary Response Sample
A sample which consists of individuals who choose themselves to participate in a survey, often leading to bias and unrepresentative samples.
Contingency Table
A Contingency Table is a statistical tool used to analyze the relationship between two or more variables, presenting the frequency distribution in a matrix format.
Response Rate
The percentage of people who respond to a certain call-to-action out of the total number of people who were asked to take the action.
Rate of Return
A measure of the gain or loss on an investment over a specified period, typically expressed as a percentage of the investment's cost.
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