I think the reason why the normality of these two proportions is assumed because of n(3.13159) greater than or equal to 10 and n(1 - 3.13159) is greater than or equal to 10. Therefore, for each sample in this research, it must be taken separately.
Answer: Nothing, I just want it all if I would remove something I would of tell you. But I don’t. :)
Explanation: