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The following table shows the results of recent study regarding gender of individuals and their selected field of study.
Field of study
Male
Female
TOTAL
Medicine
80
40
120
Business
60
20
Engineering
160
200
300
100
400
We want to determine if the selected field of study is independent of gender.
a. Compute the test statistic.
b. Using the p-value approach at 90% confidence, test to see if the field of study is independent of gender.
c. Using the critical method approach at 90% confidence, test for the independence of major and gender.
Suppose we estimate this model with OLS, and there is a correlation between unobserved student traits (in the error term) with attendance. How does this bias the coefficient of attendance?
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