The flu shot changes every year in an effort to predict the strain that will be going around each year, and some years it is more effective at preventing the flu than others. A group of researchers wants to compare the effectiveness of the flu shot this year to the flu shot last year.
Null:
Alternative:
Is this hypothesis directional or non-directional?
Type I Error:
Type II Error:
Answers: 3
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The flu shot changes every year in an effort to predict the strain that will be going around each ye...
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