When selecting a random sample from a population, which of the following combinations of n and π satisfies the conditions for the sampling distribution of p to be approximately normal?
a. n=100 and π=0.97
b. n=25 and π=0.32
c. n=75 and π=0.05
d. n=40 and π=0.10
e. n=10 and π=0.67
