Exhibit 10.12.A veterinarian wants to know if pit bulls or golden retrievers have a higher incidence of tooth decay at the age of three.The vet surveys 120 three-year old pit bulls and finds 30 of them have tooth decay.The vet then surveys 160 three-year old golden retrievers and finds 32 of them have tooth decay.Number the population of pit bulls and golden retrievers by 1 and 2,respectively. Refer to Exhibit 10.12.At the 10% significance level,can the vet conclude the proportion of pit bulls that have tooth decay is different than the proportion of golden retrievers that have tooth decay?
A)No,because the confidence interval contains zero.
B)Yes,because the confidence interval contains zero.
C)No,because the confidence interval does not contain zero.
D)Yes,because the confidence interval does not contain zero.

Question

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The Answer of Exhibit 10.12.A veterinarian wants to know if pit bulls or golden retrievers have a higher incidence of tooth decay at the age of three.The vet surveys 120 three-year old pit bulls and finds 30 of them have tooth decay.The vet then surveys 160 three-year old golden retrievers and finds 32 of them have tooth decay.Number the population of pit bulls and golden retrievers by 1 and 2,respectively. Refer to Exhibit 10.12.At the 10% significance level,can the vet conclude the proportion of pit bulls that have tooth decay is different than the proportion of golden retrievers that have tooth decay?
A)No,because the confidence interval contains zero.
B)Yes,because the confidence interval contains zero.
C)No,because the confidence interval does not contain zero.
D)Yes,because the confidence interval does not contain zero.