ANSWER ONLY

57. Which of the following justifies the normal distribution approximation for sample proportion? A. np 2 5 or n(1 - p) 2 5 B. np 2 5 and n(1 - p) 2 5 C. np 2 5 or n(1 - p) 2 5 D. np 2 5 and n(1 - p) 2 5