Randomized placebo-controlled trial of a vaccine.
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Get it written →Question 4 Not yet answered Marked out of 1.00 Flag question The following is the result of a randomized placebo-controlled trial of a vaccine. Status at the end Vaccinated Control of trial Disease 5 15 No disease 95 185 The vaccine against the disease is O a. effectiveness; 33.3% O b. effectiveness; 66.7% O c. efficacy; 33.3% O d. efficacy; 70.2% O e. efficacy: 66.7%
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