STATISTICS- UNLOCKING... (LL)-W/ACCESS
2nd Edition
ISBN: 9781119600657
Author: Lock
Publisher: WILEY
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Question
Chapter E, Problem 8E
a.
To determine
Construct a plot for the overall age distribution in Country U.
Give comments on the distribution.
b.
To determine
Construct 95% confidence interval for the average age of residents in County U and interpret it.
c.
To determine
Construct a plot for the age distribution in Country U by racial group.
Give comments on the plot.
d.
To determine
Check whether the average age differs by racial group in Country U.
Provide null and alternative hypotheses.
Compute p-value.
Give conclusion in context.
e.
To determine
Provide 95% confidence interval for the average age of an Asian resident of Country U.
Explain the way to compare the answer for all the residents in County U from Part (b).
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