the overhead reach distance of adult females is normally distributed with a mean of 200 cm and a standard deviation of 8.3cm. A) find the probability that an individual distance is greater than...

the overhead reach distance of adult females is normally distributed with a mean of 200 cm and a standard deviation of 8.3cm.

A) find the probability that an individual distance is greater than 213.40 cm

B) find the probability that the mean for 25 randomly selected distance is greater than 198.50 cm

C) why can the normal distribution be used in part (B) even though the sample size does not exceed 30?