An office has 100 typewriters some are electric e and some, Ask an Expert

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An office has 100 typewriters. Some are electric (E) and some manual (M), and some of the machines are new (N) and others used (U). The mix is shown in the table below:

erson picks one machine at random:

(i) What is the probability it is new?

(ii) What is the probability it is electric?

(iii) If he discovers that it is electric what is the probability it is new?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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