A sociologist claims that children spent more time watching television in 1981 than children do today. A study was conducted in 1981 to find the time that children watched television on weekdays. Recently, a similar study was conducted. The results of these studies (in hours per weekday) are shown below. Assume the population standard deviation is 0.7 for 1981 and 0.7 for today. At a = 0.05, can you support the sociologist's claim? Complete parts (a) through (d) below. Full data set 1981 3.4 1.7 2.3 1.2 2.3 1.4 1.6 1.1 1.5 2.2 1.4 2.5 2.2 2.8 1.5 1.2 2.9 2.3 3.3 3.3 2.1 3.4 2.8 1.1 1.2 2.8 1.4 2.1 1.8 2.8 Recently 2.6 1.9 3.2 1.8 1.8 3.2 2.8 3.2 2.9 2.3 2.5 2.1 1.7 1.1 2.2 1.8 2.7 2.3 0.8 2.9 2.2 1.7 2.1 0.9 2.5 2.4 2.8 2.6 3.2 2.1 A. Children spent more time watching television in 1981 than today. O B. Children spent a different amount of time watching television in 1981 than today. C. Children spent the same amount time watching television in 1981 than today. O D. Children spent less time watching television in 1981 than today. Let the data from 1981 be sample 1 and let the recent data be sample 2. Identify Ho and Ha. Ho: H1 H2 Ha: H1 H2