toy manufacturing company has categorised all the toys they make into 4 types
depending on the battery life of toys (assuming all the toys they manufacture run on
battery). It is assumed that the toys from type 1 category will last for more than 50
hours with probability 0.4, while the corresponding probabilities for toys from type 2,
3, and 4 are 0.5, 0.8, and 0.2 respectively. Suppose that 30% of the toys are in cate-
gory 1, 20% in type 2 category, 10% in type 3 category, and 40% in type 4
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what should be answered In this, sorry I didn't understand.
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