The following data show the number of hours per day 12 adults spent in front of screens watching television-related content. Complete parts a and b below. 1.4 4.7 3.8 5.3 7.9 6.6 5.5 3.2 5.6 1.1 2.6 8.7 a. Construct a 95% confidence interval to estimate the average number of hours per day adults spend in front of screens watching television-related content. The 95% confidence interval to estimate the average number of hours per day adults spend in front of screens watching television-related content is from hours to hours. (Round to two decimal places as needed.) b. What assumptions need to be made about this population? OA. The only assumption needed is that the population distribution is approximately uniform. OB. The only assumption needed is that the population standard deviation is known. OC. The only assumption needed is that the population distribution is approximately normal. D. No assumptions are required