3. According to the nancial reports by Snapchat, the average daily user of Snapchat created19 messages, or "snaps," per day in 2017. A college student wants to find out if the number of Snapchat messages has changed since 2017 and selected a sample using information from students on her campus for the current semester, with the accompanying results. 22 9 15 25 12 17 30 24 a. At the 0.02 level of significance, is there sufficient evidence to conclude that the number of Snapchats sent by the average Snapchat user has changed since 2017? b. What assumptions need to be made to perform this analysis? 2. A recent survey by the research institute showed that 66% of users of online dating sites say the number one thing they are looking for in a date or partner is common interests. Suppose you would like to perform a hypothesis test to challenge this nding. From a random sample of 130 students on campus, you find that 79 said the number one thing they are looking for in a date or partner is common interests. Using 0.03 level of signicance. a. Is there sufficient evidence to conclude that the true proportion of students who said the number one thing they are looking for in a date or partner is common interests is different from 66%? b. Determine the p-value for part (a)