b) Is the reminder effect 6) A new vaccine was tested to see if it could lower rate of ear infections for infants. Babies about one year of age were randomly divided into two groups. One group received vaccinations, and the other did not. The following year, only 322 of 2459 vaccinated children had ear infections, compared to 492 of 2449 unvaccinated children. Use a significant level of 0.05 to test. a) Define the two populations and identify the test parameters. (n1, x1, n2, x2) b) Conduct hypothesis to test the claim that the new vaccine can lower ear infections for infants. Define claim, hypothesizes, find test statistic and p-value. c) Write the conclusion of HO and final conclusion of the claim. d) What is the 90% confidence interval from sample result? e) Write the conclusion based on the confidence interval. (Circle the choice that apply.) Because the confidence interval limits that the infection rates are (contain/do not contain) zero, it appears (equalot equal). Because the confidence interval includes appears that the infection rate is (only positive/ only negative/ not positive and negative) values, it (lower/higher/the same) for the vaccinated babies. f) Is the vaccine effective in lowering ear infection