Mathematics, 21.11.2019 05:31 locomexicano03
Amedical experiment is planned to compare the herb echinacea with a placebo for preventing colds. one response variable will be "volume of nasal secretions" (if you have a cold, you blow your nose a lot). suppose the average volume of nasal secretions in people without colds is 2. an increase to 6 indicates a cold.1. which of the following describes the meaning of the significance level ? for a test of the hypotheses: h0: mu = 2 versus ha: mu > 2 ? a) alpha is the probability of selecting a sample whose data leads us to the decision to reject h0 when in reality mu = 2 is true. b) alpha is the probability of selecting a sample whose data leads us to the decision fail to reject h0 when in reality mu = 6 is true.2.the power of the test in (a) when the true value of the population mean is mu = 6 : a) the probability of selecting a sample whose data leads us to the decision to reject h0when mu = 6 is true. b) the probability of selecting a sample whose data leads us to the decision to fail to reject h0 when mu = 2 is true.
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Amedical experiment is planned to compare the herb echinacea with a placebo for preventing colds. on...
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