(c) Find the critical t-value for constructing a 95% confidence interval for the population mean with the degree of freedom given in the summary.(d) Construct a 95% confidence interval by hand with the information provided, and verify the confidence interval result from StatCrunch. Show all your work to receive full credits.(e) If we decrease the sample size to 20,000, how does this change affect the margin of error and the confidence interval? Question: The General Social Survey asked respondents, "If ever married, how old were youwhen you first married?" The summary statistics of the sample data is given below:Sample std. dev.Sample mean22.15Sample size4.88526540The results for interval estimate of the mean age of first marriage are summarized in theStatCrunch output that follows:One sample T summary confidence interval::Mean of population95% confidence interval results:L. LimitU. LimitMean Sample Mean Std. Err.DF22.15 0.029985694 26539 22.09 1226 22.208774

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Description: (c) Find the critical t-value for constructing a 95% confidence interval for the population mean with the degree of freedom given in the summary.(d) Construct a 95% confidence interval by hand with the information provided, and verify the confidence

(c) The confidence level is 95%. The level of significance = 1 – confidence level = 1 – 0.95 =…

Answered: Question: The General Social Survey…

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

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(c) Find the critical t-value for constructing a 95% confidence interval for the population mean with the degree of freedom given in the summary.

(d) Construct a 95% confidence interval by hand with the information provided, and verify the confidence interval result from StatCrunch. Show all your work to receive full credits.

(e) If we decrease the sample size to 20,000, how does this change affect the margin of error and the confidence interval?

Question: The General Social Survey asked respondents, "If ever married, how old were you
when you first married?" The summary statistics of the sample data is given below:
Sample std. dev.
Sample mean
22.15
Sample size
4.885
26540
The results for interval estimate of the mean age of first marriage are summarized in the
StatCrunch output that follows:
One sample T summary confidence interval:
:Mean of population
95% confidence interval results:
L. Limit
U. Limit
Mean Sample Mean Std. Err.
DF
22.15 0.029985694 26539 22.09 1226 22.208774

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