A recent news report asserts that the weekly mean (u) number of drinks (both mixed drinks and beer) consumed by college students is 12.56 drinks. Data from a sample of 30 students enrolled at your university indicate a weekly consumption level () of 11.21 drinks, with a standard deviation (o) of 3.88. Assume that you're working at the .05 level of significance. 1. State an appropriate null hypothesis. 2. What is the value of the calculated test statistic (t)? 3. Identify the critical value. 4. State your conclusion