Use this information for questions 1-5. You've collected random samples of 12 oz. cups of coffee from both Starbucks and Dunkin Donuts. Assume the caffeine content in coffee is normally distributed in the population. Here is the caffeine content in each cup (in mg): ' 134 12'! 119 135 132 128 127. 86 Starbucks 110 105 101 113 103 105 101 105. 43 1. Determine if there is a difference between a 12 oz cups of coffee from Dunkin Donuts and a double shot of espresso in caffeine content. A double shot of espresso contains 150 mg of caffeine. Perform the appropriate test and write a conclusion to answer this rguestion. Use a tcritical of 2.45. 2. Estimate the 95% condence interval for the average amount of caffeine in a Dunkin Donut 12 oz coffee. Use a t-critical of2.45