You need to find a 98% confidence interval for mean pinkie lengths for statistics students in the United States. You have the sample data in the file pinkie.ixl which is located in the My Open Math instructions with this activity. 1. Define the random variables X and Xin words. 2. You must use the Student Tdistribution to nd this confidence interval. Explain why this must use this distribution using complete sentences. 3. Answer the following questions: a. What does f represent in general and what is its specific value in this example? b. What does Srepresent in general and what is its specific value in this example? 0. What does nrepresent in general and what is its specific value in this example? d. What does df represent in general and what is its specific value in this example? e. What does CL represent in general and what is its specific value in this example