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.

Question

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.

Quizplus · Accepted Answer

The Answer of 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.

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