Let x be a ramdom variable that represents the height in inches, of an adult 18 years or older female in the US then x has an approximately normal distribution with a mean=63.5 and standard deviation = 3 find the probability that a ramdomly chosen adult female in the US is at most 66 inches tall. Hint: you must find P(x is at least 66 in)
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!
Let x be a ramdom variable that represents the height in inches, of an adult 18 years or older female in the US then x has an approximately
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