Exhibit 10

question 86

Multiple Choice

Exhibit 10.11.The student senate at a local university is about to hold elections.A representative from the women's sports program and a representative from the men's sports program must both be elected.Two candidates,an incumbent and a challenger,are vying for each position and early polling results are presented next.A hypothesis test must be performed to determine whether the percentages of supporting votes are different between the two incumbent candidates.In a sample of 100 voters,67 said that they would vote for the women's incumbent candidate.In a separate sample of 100 voters,55 said they would vote for the men's incumbent candidate.Let p₁ and p₂ be the proportions of supporting votes for the incumbent candidates representing women's and men's sports programs,respectively. Refer to Exhibit 10.11.What type of a hypothesis test must be performed to determine whether the percentages of supporting votes are different between the two incumbent candidates?

• A)A z test of two sample proportions with a zero hypothesized difference
• B)A t test of two population proportions with a zero hypothesized difference
• C)A z test of two population proportions with a zero hypothesized difference
• D)A t test of two population proportions with a non-zero hypothesized difference

---

Definitions:

Sage Grouse

A species of grouse native to sagebrush ecosystems of western North America, known for their elaborate courtship rituals.

Fiddler Crabs

A type of crab known for their sexually dimorphic claws, where males possess one enlarged claw used for communication and contests during mating rituals.

Oxytocin

Posterior pituitary hormone that acts on smooth muscle of the reproductive tract and breasts.

Social Attachments

Emotional bonds between individuals, crucial for human development and contributing to the psychological health and well-being of social creatures.