A manufacturing plant for recreational vehicles receives shipments from three different
parts vendors. There has been a defect issue with some of the electrical wiring in the
recreational vehicles manufactured at the plant. The plant manager wonders if all of the
vendors might be contributing equally to the defect issue. The plant manager reviews three
samples of quality assurance inspections from the last six months, one from each of the
vendors. The data are shown in the table below. 
Test an appropriate hypothesis to decide if the plant manager is correct. Give statistical
evidence to support your conclusion.
Definitions:
Hypothalamus
A region of the brain responsible for hormone production that regulates essential bodily functions, including temperature, hunger, thirst, and emotional activity.
Heterosexual Males
Men who are sexually attracted to individuals of the opposite sex.
Homosexual Males
Men who experience sexual attraction to other men.
Sexual Preference
An individual's pattern of sexual attraction to other people, often described in terms of the gender to which a person is attracted.
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