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A bakery has the following schedule of daily demand for cakes.
Net Answers :
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Solution | |
Let "x" represent the number of cakes demanded (in hundreds) per day. The values carried by "x" are 0, 1, 2, ... ,9 ==> "x" is finite. Sum of the probabilities of the various values of "x" = 0.02 + 0.07 + 0.09 + 0.12 + 0.20 + 0.20 + 0.18 + 0.10 + 0.01 + 0.01
The values of "x" represent the values in the range of a discrete random variable
The given distribution therefore, represents a discrete probability distribution of "X" Calculations for Mean and Standard Deviations
Since the given distribution is the probability distribution of a discrete random variable "X", Σ p = 1. From the probability distribution: Expected (Mean) Number of cakes demanded per day
⇒ Variance of the distribution
⇒ standard deviation of the distribution
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Credit : Vijayalakshmi Desu |