Mathematics, 09.12.2020 05:00 Jenifermorales101
9) A researcher wishes to test the effectiveness of a flu vaccination. 150 people are vaccinated, 180 people are vaccinated with a placebo, and 100 people are not vaccinated. The number in each group who later caught the flu was recorded. The results are shown below. Are the proportions of people catching the flu the same in all three groups ?
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9) A researcher wishes to test the effectiveness of a flu vaccination. 150 people are vaccinated, 18...
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