What is the 95% confidence interval for the mean number of years of education for lower-class respondents?
RES710 Statistical Research Methods And Design I
Week 6 Quiz
Question 1What is the 95% confidence interval for the mean number of years of education for lower-class respondents?
1. 11.60 to 12.62
2. 23.20 to 25.24
3. 5.80 to 6.31
4. 13.60 to 14.62
Question 2What is the 95% confidence interval for the mean number of years of education for working-class respondents?
1. 14.76 to 15.25
2. 12.76 to 13.25
3. 25.50 to 26.50
4. 6.38 to 6.63
Question 3What is the 99% confidence interval for the mean number of years of education for lower-class respondents?
1. 11.44 to 12.78
2. 5.72 to 6.39
3. 13.55 to 14.89
4. 22.88 to 25.56
Question 4What is the 99% confidence interval for the mean number of years of education for middle-class respondents?
1. 18.65 to 19.33
2. 4.65 to 5.33
3. 7.33 to 7.67
4. 14.65 to 15.33
Question 5As our confidence in the result increases, how does the size of the confidence interval change?
1. The confidence interval gets wider, not narrower – increasing confidence leading to less precise intervals.
2. The confidence interval gets narrower, but not wider – decreasing confidence leading to more precise intervals.
3. As the result increases, the confidence level remains the same.
4. As the result increases, the confidence level is reduced.
6. Though 70% of women with children younger than 18 years participate in the labor force, society still upholds the stay-at-home mother as the traditional model. Some believe that employment distracts mothers from their parenting role, affecting the well-being of children. In the GSS 2014, respondents were asked to indicate their level of agreement to the statement, “A working mother hurts children.” Of the 435 male respondents who answered the question, 18% strongly agreed that a working mother does not hurt children.
Question 6What is the 90% confidence interval for this statistic for males?
1. 0.30 to 0.42
2. 0.08 to 0.11
3. 0.15 to 0.21
4. 1.50 to 2.10
Question 7Of the 566 female respondents who answered the question, 40% strongly agreed that a working mother does not hurt children. What is the 90% confidence interval for this statistic?
1. 0.74 to 0.86
2. 0.37 to 0.43
3. 0.14 to 0.18
4. 0.19 to 0.22
According to a report published by the Pew Research Center in February 2010, 61% of Millennials (people born between 1981 and 1996) think that their generation has a unique and distinctive identity (N?= 527).
Question 8What is the 95% confidence interval to estimate the percentage of Millennials who believe that their generation has a distinctive identity as compared with the other generations (Generation X, Baby Boomers, or the Silent Generation)?
1. CI = 6.84 to 5.16
2. CI = 50.88 to 60.76
3. CI = 102.84 to 112.16
4. CI = 56.84 to 65.16
Question 9What is the 99% confidence interval?
1. CI = 55.53 to 66.47
2. CI = 111.06 to 132.94
3. CI = 27.77 to 33.24
4. CI = 57.55 to 68.49
Question 10Are both these results compatible with the conclusion that the majority of Millennials believe they have a unique identity that separates them from the previous generations?
1. Yes
2. No
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