Need to do chi square analysis on occurrences of a rare disease in an rural area of 1000

| August 30, 2017

Question
Need to do chi square analysis on occurrences of a rare disease in an rural area of 1000 people vs. national averages for this rare disease. Data is based on different age groups:

National Avg.

Age Ranges % with disease
0 <age </= 20 2%
20<age</=40 5%
40<age60 20%
Rural

Age Ranges % with disease
0<age</=20 30
20< age </= 40 200
40<age60 185
Looking at national data, what is expected value of rural with disease?

Is disease incidence significantly different than national?

What are standardized residuals?

Interpret results.

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