at a dog fair, 37 dogs were entered for judging under the normal dog division. if the masses are normally distributed and the average weight is 12.4 kg, with a standard deviation for 2.31 kg...
what is the probability that a dog has a mass between 13.5 kg and 15kg, greater than 13 and less than 14?

Question

at a dog fair, 37 dogs were entered for judging under the normal dog division. if the masses are normally distributed and the average weight is 12.4 kg, with a standard deviation for 2.31 kg...
what is the probability that a dog has a mass between 13.5 kg and 15kg, greater than 13 and less than 14?

perl · Answer

a) normalcdf (13.5, 15, 12.4, 2.31) = .186789
b) normalcdf(13, 1x10^99,12.4, 2.31)=.3975
c) normalcdf ( -1x10^99,12.4, 2.31) = .75573