Assume that the total cholesterol levels for adults are normally distributed with mean cholesterol level of 51.4 mg/dl and standard deviation 14.3 mg/dL. Find the probability that an individual will have a cholesterol level greater than 58 mg/dL Click here for page lof the Areas under the Normal Curve Table Click here for page 2 of the Areas under the Normal Curve Table The probability that an individual will have a cholesterol level greater than 58 mg/dl is (Round to four decimal places as needed.)
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!
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