STATISTICAL TECHNIQUES AND TOOLS
TESTS OF SIGNIFICANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A medical experiment compared the herb Echinacea with a placebo for preventing colds. The study used 50 different response variables usually associated with colds, such as low-grade fever, congestion, frequency of coughing, etc. The subjects were 40 women between 25 and 40 years of age. 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 µ = 1. An increase to µ = 3 indicates a cold. Which of the following describes the significance level of a test of H0:µ=1 versus Ha:µ>1?
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The probability that the test rejects H0 when µ = 1 is true
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The probability that the test rejects H0 when µ = 3 is true.
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The probability that the test fails to reject H0 when µ = 3 is true.
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The probability that the test fails to reject H0 when µ = 1 is true
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None of the above
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Explanation:
There is 1 question to complete.