The question below refers to the following situation:
A valet parking attendant is interested in whether daytime temperature affects the size of tips. To study this question, she records the size of the tip given by her customers on 3 extremely hot summer days, 3 warm spring days, and 3 cold winter days. Complete an analysis of variance to test the differences between mean tips with significance (α = .05), to determine if the groups differ from each other. 
What are your conclusions about the null hypothesis?
Definitions:
Surplus
A situation in which the quantity of a good or service supplied exceeds the quantity demanded at the current price.
Binding Price Floor
A minimum price set by the government that is above the equilibrium price, causing a surplus of the good.
Equilibrium Price
The price at which the quantity of a good or service demanded by consumers equals the quantity supplied by producers, resulting in a balanced market.
Binding Price Floor
A minimum price set by the government that is above the equilibrium price, resulting in a surplus of the product.
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