Question:A new drug is being tested to see if it can raise the frequency of migraines. Study participants were divided into two groups. 42 participants in group 1 received the medication; 31 participants in group 2 received a placebo. After a period of six months, group 1 had a mean of 4.5 migraines. It is known that the population standard deviation for this group is 1.1 migraines. Group 2 had a mean of 3.2 migraines. The population standard deviation for this group is 1.7 migraines . Can we conclude that the medication raises the population mean number of migraines ? Use alpha a = 0.04 . Note: If t-test, then unequal variances are assumed .

(Step 5) Decision: Since the test statistic is Select an answer the critical value(s), we Select an answer v Ho at a= 0.04. (Step 6) Conclusion : Interpret your decision above. O There is enough evidence to conclude that the medication raises the population mean number of migraines. O There is not enough evidence to conclude that the medication raises the participants' mean number of migraines. O There is not enough evidence to conclude that the medication raises the population mean number of migraines. O There is enough evidence to conclude that the medication raises the participants' mean number of migraines