The compressive strength of samples of cement can be modeled by a normal distribution with a mean of
6000 kilograms per square centimeter and a standard deviation of 100 kilograms per square centimeter.
a. What is the probability that a sample’s strength is less than 6250 Kg/cm2?
b. What is the probability that a sample’s strength is between 5800 and 5900 Kg/cm2?
c. What strength is exceeded by 95% of the samples?
d. Answer parts a through c using Excel functions. Either submit your Excel file or write down your
Excel functions in detail as well as your answers from each function.