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Veterinarian wants to test the strain of anabiotic’s on cams to determine the resistance to common...

Veterinarian wants to test the strain of anabiotic’s on cams to determine the resistance to common infection. In a past year our 22 newborn calves. There is enough vaccine for 10 caps. However blood test to determine resistance to infection can be done on
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Answer #1
  • Use random selection to pick 5 calves to inoculate.
  • No placebo is being used.
  • After inoculation, test 5 calves to see if there is a difference in resistenece to infection beetween the two groups.
  • After inoculation, test 10 calves to see if there is a difference in resistenece to infection beetween the two groups. use random selection to pick 10 calves to inoculate.
  • A placebo is used for remaining 12 calves.
  • After inoculation, test all calves to see if there a ifference in resistenece to infection beetween the two groups.
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