TEST FOR DIFFERENCES OF TWO PROPORTIONS GOT FROM TWO DIFFERENT POPULATIONS
Using Python:
Calculate sample proportions and combined proportion
Calculate SE of combined proportion and z calculated value
Calculate Z-critical value and p-value
Plot the curve:
- Since the abs(z-statistic) > z critical value and p value < 0.05
- Reject Null hypothesis and conclude that proportions are not equal. They are statistically different
Recommendation:
