shyanne2140 shyanne2140

17-09-2018
Mathematics

contestada

Suppose that 30% of flies are black, and 70% are grey. Two flies are chosen at random, what is the probability that the chosen flies are both grey? (please round to 2 decimal places)

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ColinJacobus ColinJacobus

18-09-2018

Probability of choosing a black fly = 30/100 = 0.3

Probability of choosing a grey fly = 70/100 = 0.7

So, probability of choosing 2 grey flies = 0.7*0.7 = 0.49

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