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  4. Four teachers dress to feel warm. Teacher A has a hat and a scarf and gloves, B has only a hat, C only a scarf and D has only...

Four teachers dress to feel warm. Teacher A has a hat and a scarf and gloves, B has only a hat, C only a scarf and D has only gloves. One teacher out of the four is selected at random.

«Four teachers dress to feel warm. Teacher A has a hat and a scarf and gloves, B has only a hat, C only a scarf and D has only gloves. One teacher out of the four is selected at random.»
  • Английский язык

Условие:

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Four teachers dress to feel warm. Teacher A has a hat and a scarf and gloves, B has only a hat, C only a scarf and D has only gloves. One teacher out of the four is selected at random. Show that though each pair of events H = 'the teacher selected has a hat', S = 'the teacher selected has a scarf', and G = 'the teacher selected has gloves' are independent, all three of these events are not independent.

Решение:

Choose a hat can choose teachers А and B. Choose а scarf can teachers A and C. Choose gloves can teachers A and D.

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