4. The width and height of the normal curve distribution is determined by the 5. The two important parameters that best describe the normal curve are the and the 6. The curve of the normal distribution extends indefinitely at the tails but does not 7. is the area under the curve falls within 2 standard deviations of the mean. 8. is the area under the curve falls within 3 standard deviations of the mean. 9. is the area under the curve falls within 1 standard deviation of the mean. 10. a normal curve with the mean u = 0 and a standard deviation a = 1.
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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