The heights of grade 11 students are normally distributed with an average height of grade 11 students are 167 cm with a variance of 144 cm2. a) Find the probability that a grade 11 student will have a height less than 160 cm.
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!
The heights of grade 11 students are
grade 11 students are 167 cm with a variance of 144 cm2.
a) Find the probability that a grade 11 student will have a height less than 160 cm.
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