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Mathematics, 30.11.2019 04:40 kdd46

Type i light bulbs function for a random amount of time having mean μi and standard deviation σi, i = 1, 2. a light bulb randomly chosen from a bin of bulbs is a type 1 bulb with probability p and a type 2 bulb with probability 1 − p. let x denote the lifetime of this bulb. find (a) e[x]; (b) var(x). 7.65. the number

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