1. In a clinical trial for the effectiveness of a new treatment
for the flu, some people were given the new treatment while others
received a placebo, Of the 400 people that were given the new
treatment, 300 of them saw improvements. Of the 169 people that
received the placebo, 120 saw improvements. Use a 0.05 significance
level to test the claim that there is no difference in the
proportion of people that saw improvements whether or not they
receive...