Normal Distribution Problem.   Porphyrin is a pigment in blood protoplasm and other body fluids that is significant in body energy and storage.  Assume porphyrin is normally distributed with mean (mu) = 38 milligrams per deciliter and standard deviation (sigma) = 12 milligrams per deciliter. What is the probability that x is less than 56?   What is the probability that x is greater than 23?  What is the probability that x is between 23 and 56?

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.