A medical experiment compared the herb echinacea with a placebo for preventing colds. One response variable...
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A medical experiment compared the herb echinacea with a placebo for preventing colds. One response variable was "volume of nasal secretions" (if you have a cold, you blow your nose a lot). Take the average volume of nasal secretions in people without colds to be u= 1. An increase to u = 3 indicates a cold. The significance level of a test of H, : u =1 versus H,:u>1 is (a) the probability that the test rejects H, when u = 1 is true. (b) the probability that the test rejects H, when u = 3 is true. (c) the probability that the test fails to reject H, when u = 3 is true. (d) the probability that the test fails to reject H, when u = 1 is true. (e) none of the above A medical experiment compared the herb echinacea with a placebo for preventing colds. One response variable was "volume of nasal secretions" (if you have a cold, you blow your nose a lot). Take the average volume of nasal secretions in people without colds to be u= 1. An increase to u = 3 indicates a cold. The significance level of a test of H, : u =1 versus H,:u>1 is (a) the probability that the test rejects H, when u = 1 is true. (b) the probability that the test rejects H, when u = 3 is true. (c) the probability that the test fails to reject H, when u = 3 is true. (d) the probability that the test fails to reject H, when u = 1 is true. (e) none of the above
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