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A study set out to determine whether tetrahydrocannabinol (THC, the psychoactive component of marijuana) affects fertility in male hamsters. Two different experiments were conducted, using different measures of fertility. For each experiment, you will test the hypothesis that fertility differs between control hamsters and those treated with THC. You will use the most powerful test for which the data meet assumptions. You must explicitly test these assumptions and show that they are met. If data can be transformed to meet assumptions, then do so, and show that transformation had this effect.
Experiment 1: THC and testis weight.Thirty-six hamsters were randomly assigned to two treatment groups (18 hamsters in each group). One group was administered THC orally three times a week for five weeks at a dose roughly equivalent in humans to three marijuana cigarettes. The control group was administered sesame oil at the same frequency. At the end of the study each hamster was killed and the weight of its testes was measured. The data are shown below. Your assignment is to test for an effect of THC on testes weight.
Which of these lists contains the four postulates of natural selection? Which of these lists contains the four postulates of natural selection? Uniform population, heritable trait
what process are nematocysts formed by the cnidoblast?
Rainfall is high, sometimes higher than tropical rain forests but seasonal. There are pronounced wet and dry periods, and so are winter and summer seasons. The soils are brown in c
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introduction
AMNIOCENTOSI S - Transabdominal aspiration of fluid from the amniotic sac of the foetus is called amniocentesis . It is prenatal diagonestic technique to determine genet
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Through Nuclear transfer how Dolly came into the picture. Show schematically and give all data.
Q. How the DNA nanoarchitecturing works? DNA Nano architectures constructs that can be self-assembled from branched DNA molecules. Their components can be simple branched speci
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