In the largest clinical trial ever conducted, 401974  children were randomly assigned to two groups. The treatment group consisted of 201229 children given the Salk vaccine for polio, and 33 of those children developed polio. The other 200745 children were given a placebo, and 115 of those children developed polio. If we want to test the claim that the rate of polio is less for children given the Salk vaccine, are the requirements for the hypothesis test satisfied? Explain step by step in detail ,

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.