Estimated mean age difference

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Reference no: EM131008647

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 neighbor- hoods look as follows:

Neighborhood 1

Neighborhood 2

n1 = 30

y1 = 57.2 yrs

s1 = 7.51 yrs

n2 = 35

y2 = 47.6 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.

Reference no: EM131008647

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