A sociologist claims that children spent more time watching television in 1981 than children do today. A study was conducted in 1981 to nd the time that children watched television on weekdays. Recently, a similar study was conducted. results of these studies (in hours per weekday) are shown below. Assume the population standard deviation is 0.8 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 131 1981 2.9 2.5 1.2 1.4 2.3 2.2 1.3 3.3 1.4 2.1 2.3 1.9 3.4 3.2 1.6 3.2 3.1 1.3 2.1 2.1 1.4 2.9 1.1 3.5 3.2 2.5 1.1 2.8 1.1 1.5 Recently 1.3 2.8 2.1 0.8 0.9 1.5 1.5 3.3 1.3 0.8 3.1 2.8 3.1 2.4 1.6 2.1 . 1.6 1.3 3.1 1.8 1.3 2.3 1.6 2.6 1.1 1.4 2.1 2.1 2.5 (a) identify the claim and state H0 and He. What is the claim