1) You want to find out the average number of friends people have on Facebook. You decide to create a confidence interval answer this. After surveying 50 people, you found a point of estimate of 124 and a standard deviation of 18.4. Answer the following:
(a) Find the MoE for a 90% confidence level.
(b) Create a confidence interval at a 99% level.
(c) Create a confidence interval at a 88% level.
(d) Name two things that can be done to decrease the interval.
(e) Using the same standard deviation, at a 99% level of confidence, how many people would need to be surveyed to have a MoE of 5?