help please

Given the table below, determine the "true" average amount of celfone load that spend in a week. . Name of your classmate Amount spent in celfone load for 1 week Rhea Php 55 ( 175 Glydelyn Php 75 Jeanette Php 105 Marvin Php55 Mark Php 50 Althea Php 75 Guide Questions: 1. What are the different ways in accomplishing the task? 2. What is the "true" average amount of celfone load of your classmates? 3. If you want to enhance the precision of your guess, what is needed to be change? 4. How do you call this value? 5. What should be made in finding the interval estimate? 6. Suppose you state a confidence 90%, what is E and the computed interval estimate