Consider a multinomial experiment involving 160 trials 4 categories (cells).The observed frequencies resulting from the experiment are shown in the accompanying table. 
Use the 10% significance level to test the hypotheses: H0: p1 = p2 = p3 = p4 = .25 vs.H1: At least one proportion differs from their specified values.
Definitions:
Complementary Resources
Goods or services that are used together, where the use of one increases the value or demand for the other.
Shift Demand
A change in the quantity demanded at every price point, caused by factors other than the price of the product itself.
Derived Demand
Demand for a good or service that arises from the demand for another good or service; for example, the demand for steel is derived from the demand for cars.
Capital
Financial assets or the financial value of assets, such as funds held in deposit accounts and/or funds obtained from special financing sources.
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