A sociologist claims that children spent more time watching television in 1981 than children do today. A study was conducted in 1981 to find watched television on weekdays. Recently, a similar study was conducted. The results of these studies (in hours per weekday) are shown b population standard deviation is 0.6 for 1981 and 0.7 for today. At a = 0.05, can you support the sociologist's claim? Complete parts (a) thro Full data set O 1981 3.5 2.5 2.6 2.7 2.3 1.3 2.1 2.9 2.6 1.6 2.8 2.2 2.9 1.3 3.3 2.6 3.1 2.5 1.6 2.7 1.7 1.6 2.6 2.1 1.7 1.4 3.1 2.3 2.2 1.4 Recently 2.3 2.1 1.3 1.9 2.6 0.9 1.8 0.9 2.2 1.2 0.9 0.7 2.1 0.5 2.7 0.5 1.2 1.2 1.2 1.2 1.4 0.8 1.1 2.8 1.9 1.1 0.8 0.6 2.9 1.2

A sociologist claims that children spent more time watching television in 1981 than children do today. A study was conducted in 1981 to find watched television on weekdays. Recently, a similar study was conducted. The results of these studies (in hours per weekday) are shown b population standard deviation is 0.6 for 1981 and 0.7 for today. At a = 0.05, can you support the sociologist's claim? Complete parts (a) thro Full data set O 1981 3.5 2.5 2.6 2.7 2.3 1.3 2.1 2.9 2.6 1.6 2.8 2.2 2.9 1.3 3.3 2.6 3.1 2.5 1.6 2.7 1.7 1.6 2.6 2.1 1.7 1.4 3.1 2.3 2.2 1.4 Recently 2.3 2.1 1.3 1.9 2.6 0.9 1.8 0.9 2.2 1.2 0.9 0.7 2.1 0.5 2.7 0.5 1.2 1.2 1.2 1.2 1.4 0.8 1.1 2.8 1.9 1.1 0.8 0.6 2.9 1.2

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Description: 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 childrenwatched television on weekdays. Recently, a similar study was conducted. The results o

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Concept explainers

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

Topic Video

Question

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 0.6 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 O
1981
3.5 2.5 2.6 2.7 2.3 1.3 2.1 2.9 2.6 1.6 2.8 2.2 2.9 1.3 3.3
2.6 3.1 2.5 1.6 2.7 1.7 1.6 2.6 2.1 1.7
1.4 3.1 2.3 2.2 1.4
Recently 2.3 2.1
1.3 1.9 2.6 0.9 1.8 0.9 2.2 1.2 0.9 0.7 2.1 0.5 2.7
0.5 1.2 1.2 1.2 1.2 1.4 0.8 1.1 2.8 1.9
1.1 0.8 0.6 2.9 1.2
What is the rejection region? Select the correct choice below and fill in the answer box(es) within your choice.
(Round to three decimal places as needed.)
A.
z< or z>
С.
z>
B.
C.

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