Question: A political poll based on a random sample of 1000 likely voters classified them by sex and asked them if they planned to vote for

A political poll based on a random sample of 1000 likely voters classified them by sex and asked them if they planned to vote for Candidate A or Candidate B in the upcoming election. Results are shown in the accompanying table.
a. State the null and alternative hypotheses in this situation.
b. Calculate the expected counts.
c. Explain in words the rationale for the expected counts in the context of this example.
d. Calculate the value of the chi-square statistic
e. Make a conclusion using a level of 0.05. State the conclusion in the context of this situation.

Candidate A Candidate B Total Male Female 300 Total 500 450 550 1000 200 250 250 500

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a Null hypothesis There is no relationship between sex and preferred candidate for the popul... View full answer

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