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In the city of Concepcin, the consumption of electrical energy KW/hour has a distribution with = 3 and =2. If the system capacity is 10000

In the city of Concepcin, the consumption of electrical energy KW/hour has a distribution with = 3 and =2. If the system capacity is 10000 KW/hour 4.1 What is the probability that in a given hour the capacity is insufficient. 4.2 If there is a consumption between 3 thousand and 8 thousand KW/HOUR 4.3 Find the mean and variance.

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