13.41. KVS Pharmacy fills prescriptions for a popular children’s anti-biotic, Amoxycilin. The daily demand for Amoxycilin is normally distributed with a mean of 200 ounces and a standard deviation o"
a) Finish the standard deviation value.
b) Calculate the probability that the daily demand exceeds 220 ounces.
c) Determine the z-score for a daily demand of 180 ounces.
d) Find the daily demand value that corresponds to the 90th percentile.