In the largest clinical trial ever conducted, 401,974 children were randomly assigned to two groups. the treatment group consisted of 201,229 children given the salk vaccine for polio (the first sample), and the other 200,745 children were given a placebo (the second sample). among those in the treatment group, 33 developed polio and among those in the placebo group, 115 developed polio.
a. if we want to test the claim that the rate of polio is less for children given the salk vaccine, are the requirements for a hypothesis test satisfied?
b. identify the null hypothesis and the alternative hypothesis.
c. if the p-vale for the test is reported as “less than 0.001”, what should you conclude about the original claim?

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