Question

The developer in Exercise 1 hires an assistant to collect a random sample of houses from each neighborhood and finds that the summary statistics for the two neighborhoods look as follows:
Neighborhood 1 Neighborhood 2
n1 = 30 ........ n2 = 35
y1 = 57.2 yrs ....... y2 = 47.6 yrs
s1 = 7.51 yrs ....... s2 = 7.85 yrs
a) Find the estimated mean age difference between the two neighborhoods.
b) Find the standard error of the estimated mean difference.
c) Calculate the t-statistic for the observed difference in mean ages assuming that the true mean difference is 0.


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  • CreatedMay 15, 2015
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