Asian residents in Boston have the highest average life expectancy o f any racial or ethnic group— a decade longer than black residents (The Boston Globe, August 1 6, 2010).

Suppose sample results indicative o f the overall results are as follows.

Asian Black Latino White n 1 = 20 n2 = 20 n3 = 20 n4 = 20

a. Construct an ANOVA table.

b. Specify the com peting hypotheses to test w hether there are some differences in average life expectancies between the four ethnic groups.

c. At the 5% significance level, w hat is the conclusion to the test? P-69