A study asked respondents, "If ever married, how old were you when you first married?" The results are summarized in the technology excerpt that follows. Complete parts (a) through (d) below. One-Sample T: AGEWED Mean StDev SE Mean Variable N 95.0% CI AGEWED 26790 23.070 4.991 0.030 (23.010, 23.130) Click the icon to view the table of critical t-values. 4.991 23.070 1.96 • = 23.010 26790 (Round to three decimal places as needed.) Next find the upper bound. 4.991 1,96 • 26790 23.070 + = 23.130 (Round to three decimal places as needed.) (d) Why is the margin of error for this confidence interval so small? O A. The mean is very small. O B. The standard deviation is very large. O C. The standard deviation is very small. O D. The sample size used is very large.

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A study asked respondents, "If ever married, how old were you when you first married?" The results are summarized in the technology excerpt that follows. Complete parts (a) through (d) below.
One-Sample T: AGEWED
Mean StDev SE Mean
Variable
95.0% CI
AGEWED
26790 23.070 4.991
0.030 (23.010, 23.130)
Click the icon to view the table of critical t-values.
4.991
23.070
1.96 •
= 23.010
26790
(Round to three decimal places as needed.)
Next find the upper bound.
4.991
23.070 +
1.96 •
= 23.130
26790
(Round to three decimal places as needed.)
(d) Why is the margin of error for this confidence interval so small?
O A. The mean is very small.
O B. The standard deviation is very large.
O C. The standard deviation is very small.
O D. The sample size used is very large.
Transcribed Image Text:A study asked respondents, "If ever married, how old were you when you first married?" The results are summarized in the technology excerpt that follows. Complete parts (a) through (d) below. One-Sample T: AGEWED Mean StDev SE Mean Variable 95.0% CI AGEWED 26790 23.070 4.991 0.030 (23.010, 23.130) Click the icon to view the table of critical t-values. 4.991 23.070 1.96 • = 23.010 26790 (Round to three decimal places as needed.) Next find the upper bound. 4.991 23.070 + 1.96 • = 23.130 26790 (Round to three decimal places as needed.) (d) Why is the margin of error for this confidence interval so small? O A. The mean is very small. O B. The standard deviation is very large. O C. The standard deviation is very small. O D. The sample size used is very large.
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