(4) 8. How large a sample do you need to take to climate the true average time to do a task if you wish to be accurate to within 25 minutes with 99% confidence? (historically ( = 140) Note: E = 2.58() (4) 9. How large a sample do I need to take to find the true % who subscribe to Netflix if I wish to be accurate to within 3.22% with 95% confidence? (note: E = 1.96(.5/Vn ) (11) 10. You are testing to see if a coin is fair or not. You flip the coin 295 times and get heads 130 times. a) At the .01 level is the coin fair? (p-value = .042) b) How do you explain the difference between the difference in the % we actually got and % we should have gotten based on the result from part a)