4. in a randomized, double-blind, placebo-controlled trial of children, echinacea was tested as a treatment for upper respiratory infections in children. "days of fever" was one criterion used to measure effects. among 337 children treated with echinacea, the mean number of days with fever was 0.81, with a standard deviation of 1.50 days. among 370 children given a placebo, the mean number of days with fever was 0.64 with a standard deviation of 1.16 days. use a 0.05 significance level to test the claim that echinacea affects the number of days with fever. base on the results, does echinacea appear to be effective? a. (2 pts) write the claim statement in sentence. b. (2 pts) state the null and alternate hypothesis in symbolic form. c. (2 pts) verify the requirements. d. (2 pts) find p-value. explain why you should or should not reject null hypothesis. e. (2 pts) write the conclusion in sentence