HomEWOTK [A Answer the following questions. 1. Let's pretend that we wanted to investigate how much screen time people are experiencing during the Covid-19 quarantine. Pretend that in a random sample of 25 people, the average screen time per day was 11 hours with a standard deviation of 2 hours. Answer the following questions. a. Is this a problem about a mean or a proportion? b. Do you use 2 or T distribution? c. What is the standard deviation for the mean? (Remember 0,: = [Ix/'5) d. How many degrees of freedom would you use for this distribution? e. A professional statistician tells you to use a critical value of tab = $2.06 for a 95% confidence interval. Calculate a 95% confidence interval for the true population mean. f. Based on the confidence interval, can we conclude that average screen time is above 8 hours