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. 1.6 5.5 4.3 5.3 7.6 712 5.8 2.3 5.6 1.9 2.6 8.6 a. Construct a 90% confidence interval to estimate the average number of hours per day adults spend in front of screens watching television-related content. The 90% 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? O A. The only assumption needed is that the population distribution is approximately normal OB. The only assumption needed is that the population standard deviation is known O C. The only assumption needed is that the population distribution is approximately uniform O D. No assumptions are required