ic Help me solve this 2 parts remaining Х ter co SO دي دي و دي A sociologist claims that children spent more time watchi

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ic Help me solve this 2 parts remaining Х ter co SO دي دي و دي 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 0,6 for today. At a = 0.05, can you support the sociologist's claim? Complete parts (a) through (d) below. 3. Full data set 1981 2.2 1.9 2.4 3.5 3.1 1.4 3.1 2.5 2.8 1.6 1.1 1.2 2.8 2.4 2.9 1.9 1.5 3.4 2.4 1.7 2.4 2.9 2.7 2.6 3.1 2.6 1.3 1.6 1.2 23 2 Recently 2.2 3.1 2.6 3.1 2.3 2.2 1.7 2.1 1.5 2.6 2.9 2.3 1.9 2.1 0.8 1.7 2.1 1.2 2.1 2.6 2.7 1.7 1.3 1.9 0.8 3.2 2.6 2.6 1.8 2.6 Ime (a) Identify the claim and state Ho and H eren Review the problem statement to find the claim. amp What is the claim? O A. Children spent less time watching television in 1981 than today, *B. Children spent more time watching television in 1981 than today. C. Children spent the same amount time watching television in 1981 than today D. Children spent a different amount of time watching television in 1981 than today. and Print Continue

rer A sociologist claims that children spent more time watching television in 1981 than children do today. A study was conducted in CO SO م تي تي 37 Find the z-score that corresponds to an area of a. While either technology or the Standard Normal Table could be used to find 2. the Z-score, for this problem, use technology Zo = 1,64 (Round to two decimal places as needed.) A rejection region of the sampling distribution is the range of values for which the null hypothesis is not probable. If a standardized test statistic falls in this region, then the null hypothesis is rejected. A critical value zo separates the rejection region from the nonrejection region. What is the rejection region? ime 20 > 1.64 amp (e) Find the standardized test statistic z. The formula for the standardized test statistic is given below, where X, 64, and n, are the sample mean, population standard deviation, and sample size of sample 1, respectively, and Xy, Oz, and n, are the sample mean, population standard deviation, and sample size of sample 2, respectively. and (** - x2) - (44 -12) where o na ₂ eren 2 21 + X1 X2 Print Continue Voor VI-

A sociologist claims that children spent more time watching television in 1981 than children do today. A study was conducted in er 10 BO me 3 WILD HIJOLICY 2 3. 20 > 1.64 2. (c) Find the standardized test statistic z. The formula for the standardized test statistic is given below, where xx, 04, and ny are the sample mean, population standard deviation, and sample size of sample 1, respectively, and X2, 02, and n, are the sample mean, population standard deviation, and sample size of sample 2, respectively. (xy - x2) - (14-22) ng 12 amp Find the standardized test statistic. While either technology or the formula can be used to find the test statistic, for this problem, use technology, z = 0.83 (Round to two decimal places as needed.) and (d) Decide whether to reject or fail to reject the null hypothesis and interpret the decision in the context of the original claim. If z is in the rejection region, then reject Ho. Otherwise, fail to reject Ho. 1 2 ZE Eren where 0%, -2 + Print Continue View LOGO-