A sample of 200 animals is collected from an animal populati

A sample of 200 animals is collected from an animal population that has a balanced sex ratio, i.e., 50% females, 50% males. The sex ratio in the sample produced a Chi-squared value of 2 for a Goodness of fit test (which assumed equal frequencies of males and females). What was the percentage of the more represented sex?

(Make sure to answer as a percentage, not a fraction.)

Solution

A sample of 200 animals is collected from an animal population that has a balanced sex ratio, i.e., 50% females, 50% males. The sex ratio in the sample produced a Chi-squared value of 2 for a Goodness of fit test (which assumed equal frequencies of males and females). What was the percentage of the more represented sex?

We got the chi square value of 2 for the frequency 90 and 110.

Goodness of Fit Test

observed

expected

O - E

(O - E)