Question

We compare the yearly income of a designer in Baguio and Manila, two cities in the Philippines. It is known from experience that the variance of yearly incomes in Baguio is ₱40,000 and the variance for yearly incomes in Manila is ₱90,000. A random sample of 20 families was taken in Baguio, yielding a mean yearly income of ₱47,000, while a random sample of 30 families was taken in Manila, yielding a mean yearly income of ₱52,000. At the alpha= .01 significance level, test whether or not there is a significant different in average yearly income between the two cities.

Answer 1

test whether or not there is a significant different in average yearly income between the two cities :

CONCLUSION :

there is a significant different in average yearly income between the two cities

(please UPVOTE)