General: Completely Randomized Experiment How would you use a completely randomi
ID: 3023735 • Letter: G
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General: Completely Randomized Experiment How would you use a completely randomized experiment in each of the following settings? Is a placebo being used or not? Be specific and give details. A veterinarian wants to test a strain of antibiotic on calves to determine their resistance to common infection. In a pasture are 22 newborn calves. There is enough vaccine for 10 calves. However, blood tests to determine resistance to infection can be done on all calves, is The Denver Police Department wants to improve its image with teenagers. A uniformed officer is sent to a school one day a week for 10 weeks. Each day the officer visits with students, eats lunch with students, attends I pep rallies, and so on. There are 18 schools, but the police department 1 can visit only half of these schools this semester. A survey regarding how ' teenagers view police is sent to all 18 schools at the end of the semester. (c) A skin patch contains a new drug to help people quit smoking. A group of 75 cigarette smokers have volunteered as subjects to test the new skin patch. For one month, 40 of the volunteers receive skin patches with the I new drug. The other volunteers receive skin patches with no drugs. At the end of two months, each subject is surveyed regarding his or her current smoking habitsExplanation / Answer
In completely Randomized design(CRD), the treatments applied randomly in the experiment atleast once and treatment can repeat r-times of the experiment.
a) In this there are 22 newborn calves and only 10 vaccines are available. By this situation in CRD we can't test the resistence infection to all 22 newborn calves.
b) Police officer visitted half of the school in a semester i.e, out of 18 school he visitted 10 schools only. by this peoces all the teenagers from 18 school can't view in10 days according to the CRD.
c) In one month out of 75 volunteered, 40 of the volunteered have received skin patches with new drug. By this process in Two months all the volunteered can avail new drug. here, all the volunteered having new patch of the drug, so by using CRD we can get oppropriate result.
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