Prior to an influenza season subjects were randomly assigned to receive either a flu vaccine or a
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season there were 28 cases of the flu among 813 vaccine recipients and 35 cases of the flu among the 325 subjects who were given the placebo.76 Do these data indicate that the vaccine was effective? Conduct an appropriate test using a directional alternative with α = 0.05.
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The hypotheses are H 0 The vaccine has no effect on flu prevent...View the full answer
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Related Book For 
Statistics For The Life Sciences
ISBN: 9780321989581
5th Edition
Authors: Myra Samuels, Jeffrey Witmer, Andrew Schaffner
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