Statistics

here is the link for the article

https://www.nejm.org/doi/full/10.1056/NEJMoa2113017

Read the attached article "Efficacy and Safety of the mRNA-1273 SARS-CoV-2 Vaccine." Analyze the article addressing the following: 1. What is the purpose of the article? 2. Which hypothesis test was used to evaluate the effectiveness of the vaccine? 3. Was this an observational study or an experiment? Why? 4. Identify independent and dependent variables and classify them as either quantitative or qualitative. 5. Why did the authors use blinding? 6. Where the results significant? Explain. 7. According to the article, in the treatment group, 11 out of 14,134 people got diagnosed with Covid-19, compared to 185 out of 14,073 people in the placebo group. The authored claimed that based on these results, the efficacy of the vaccine was 94.1%. How did they come up with this value? Please show your work. The following link might be helpful. https://www.cdc.gov/csels/dsepd/ss1978/lesson3/section6.html 8. CNN recently suggested that a 94% effective vaccine means that 6% of vaccinated people might catch the coronavirus. Do you agree or disagree with this statement? Explain why.

for tutor

for interpret answer please do not paste and copy only own word