Question: Effectiveness of the Salk Vaccine: In 1954 an experiment was conducted to test the effectiveness of the Salk vaccine as protection against the devastating effects of polio: 200,745 children were injected with an ineffective salt solution and 201,229 other children were injected with a vaccine. The experiment was double blind because the children being injected did no know whether they were given the real vaccine or the placebo, and the doctors giving the injections and evaluating the results didn’t know either. Only 33 of the 200745 vaccinated children later developed paralytic polio, whereas 115 of the 201,229 injected with the salt solution later developed paralytic polio. Use a 0.01 significance level to test the claim that the vaccine was effective in lowering the incidence of polio.

Price: $2.99

Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document