A generous person wants to help a selected student who having a financial problem in buying laptop for online class learning. Based on his budget, the laptop price must be in the bottom 15% for him to buy the laptop. If the mean of laptop price is RM1900 and the standard deviation is RM250, find the maximum price of the laptop. 1. The probability of interest can be represented as: А. РХ < тах) — 0.35 |В. РОХ S max) 3D0.15 С. Р(Х > тах) %3D 0.35 D. P(X 2 max) = 0.15 2. The za value for the respective probability is: A. Za = -0.3853 C. Za = -1.0364 %3D B. Za = 0.3853 D. Za = 1.0364 3. The maximum laptop price (in RM) that should be considered is: C. 1996.33 D. 2159.10 A. 1640.90 В. 1803.68
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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