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38 A veterinarian wants to know if pit bulls or golden retrievers have a higher...

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38 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 Calculate a 90 confidence interval for the difference in the population proportion of pit bulls and golden retrievers that have tooth decay Which of the following is correct Multiple Choice 0 0492 0 1492 0 0332 0 1332 0 0428 0 0572 00199 008011

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