Mathematics, 25.11.2021 08:50 user11883661

In one study of e-cigarettes, researchers recruited smokers and asked them to complete an initial survey that asked many questions about their smoking habits. A year later, the same participants completed a follow-up survey. Of the 949 participants:What conclusions can researchers draw from their data

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In one study of e-cigarettes, researchers recruited smokers and asked them to complete an initial su...