Stats 4c HW Correctly Answered 2024.

Stats 4c HW Correctly Answered 2024. n 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, and the other 200,745 children were given a placebo. Among those in the treatment group, 33 developed polio, and among those in the placebo group, 115 developed polio. If we want to use the methods for testing a claim about two population proportions 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? Explain. - CORRECT ANSWER The requirements are satisfied; the samples are simple random samples that are independent, and for each of the two groups, the number of successes is at least 5 and the number of failures is at least 5. Two samples are ____________ if the sample values from one population are not related to or somehow naturally paired or matched with the sample values from the other population. - CORRECT ANSWER Two samples are independent if the sample values from one population are not related to or somehow naturally paired or matched with the sample values from the other population. Two samples are ________________ if the sample values are paired. - CORRECT ANSWER Two samples are dependent if the sample values are paired. Which of the following is NOT a requirement of testing a claim about two population means when sigmaσ1 and sigmaσ2 are unknown and not assumed to be equal? - CORRECT ANSWER The two samples are dependent. Upper A data set includes the list price and selling price for each of 130 randomly selectedA data set includes the list price and selling price for each of 130 randomly selected . - CORRECT ANSWER The samples are dependent because there isis a natural pairing between the two samples.