Autopsies conducted on Egyptian mummies show that they died from the same disease westerners dies from today. These include obesity, diabetes, cancer, high cholesterol arthritis and stress. These are all known to be lifestyle diseases- lack of exercise, animal product consumption, processed foods alcohol and sugar, consumption and inadequate rest. The lifespan of such westerner aided by modern machine is normally distributed with a mean of 75 years and a standard deviation of 12 years. What is the probability that a randomly selected person from this group lives for more than 70 years?
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
Autopsies conducted on Egyptian mummies show that they died from the same disease westerners dies from today. These include obesity, diabetes, cancer, high cholesterol arthritis and stress. These are all known to be lifestyle diseases- lack of exercise, animal product consumption, processed foods alcohol and sugar, consumption and inadequate rest. The lifespan of such westerner aided by modern machine is
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