Hello

Can you help me

It is reported that 72% of working women use computers at work , choose 4 working wonen at random . Find the probability that :
A : all 4 use a computer at their work
B : at least one does not use a computer at work Please help me 😞

1 answer

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

A .72^4 = ?

Either-or probabilities are found by adding the individual probabilities.

B. This is saying P of either none using, 3 not using, 2 not using or 1 not using.

P = .28^4 + .28^3*.72… etc.
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