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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.
Synthesis of Hormones - Testies Leydig cells and the Sertoli cells are the steroid hormone synthesising cellular sites of the testis. Leydig cells are the major source of the
Can you give me an explanation on the osmoregulation of the Phyla Cnidaria, Ctenophora, Porifera and the Protozoa?
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Select all that are true: Plants do not have mitochondria, they have chloroplasts to convert the sun's energy into chemical energy via photosynthesis and do not need to make ATP us
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Which is the brain region responsible for the coordination and equilibrium of the body? In the central nervous system the cerebellum is the main controller of the motor coordin
The initial evaluation of new onset heart failure should include an electrocardiogram, chest radiograph, and B-type natriuretic peptide assay. The cardiac rhythm may be normal sinu
How the Oxidation-reduction potential influence the spoilage of meat? You learnt earlier that the presence or absence of oxygen and the 0-R potential of the food itself has a b
what is osmoregulation.
formation of grem layers
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