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MHT CET 2022 Mathematics question

MathematicsProbabilityMHT CET 2022

Following is the probability distribution of smart phones sold in a shop per day Number of smart phones: 0, 1, 2, 3, 4, 5 Probability: k, 0.3, 0.15, 0.15, 0.1, 2k then E(X) =

Answer: (A)

Solution

The probabilities sum to 1: . So the probabilities are . \sum$

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Question ID VK-093591