The Following Data Show the Preference of 20 People for a Candidate

question 14

Essay

The following data show the preference of 20 people for a candidate to a public office.A "+" indicates a preference for the Democratic candidate,and a "-" indicates a preference for the Republican candidate.

With $\alpha$ = 0.05,test for a significant difference in the preference for the candidates.

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Definitions:

Eat

The act of consuming food to provide nutritional support for the body.

Intramuscularly

Refers to the administration of medication by injection directly into the muscle tissue.

Needle Length

A specific measurement indicating the length of a needle, which is a critical factor in various medical and crafting applications.

Bicillin C-R

An injectable form of penicillin used to treat a variety of bacterial infections, known for its extended-release formulation.