Question

In the 2000 U.S. Census, the ages of individuals in a small town were found to be the following:

Less than 18	18-35	More than 35
20%	30%	50%

In 2010 the ages of 500 individuals from the same small town were sampled with the following results:

Less than 18	18-35	More than 35
111	165	224

Using an alpha of 0.05, test the claim that the population distribution of ages has changed in the last 10 years?

[Hint: Be sure to watch the video at Week 5 Resources on the “Chi-Square Goodness-of-Fit test (unequal frequencies)” before attempting this problem. Instructions for performing this test in STATDISK can be found in the Statdisk User’s Manual.]

Instructions	Answers
Complete the table as necessary. [Hint: You will need to compute the expected frequencies based on the previous poll results. Round to the nearest integer.]	OBSERVED	111	165	224
	EXPECTED

Answer 1