A soap manufacturer is experimenting with several formulas of soap powder. Three of the formulas were selected for further testing by a panel of homemakers. The ratings for the three formulas are as follows: 
The soap manufacturer decided to use the Kruskal-Wallis test. What is the null hypothesis?
Definitions:
Common Law
A body of legal principles derived from judicial decisions of courts and similar tribunals, rather than from statutes or constitutions.
Quebec
A province in Canada known for its unique French heritage, language, and culture within a predominantly English-speaking country.
Province
An administrative division within a country, often having its own local government.
Constitution Amendment
A modification or change to a constitution, which is the foundational legal document of a country governing its laws and principles.
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