In a study of U.S. veteran patients undergoing a first liver transplant, the distribution of their ages

Question:

In a study of U.S. veteran patients undergoing a first liver transplant, the of their ages is unimodal and symmetric with mean 54 years and standard deviation 6 years (Source: Impact of the MELD Score on Waiting Time and Disease Severity in Liver Transplantation in United States Veterans, Jawad Ahmad et al.). Estimate the probability that the age of a veteran randomly selected from the study is between
a. 36 and 72 years.
b. 48 and 60 years.
c. 42 and 66 years. Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...