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Mathematics, 08.11.2019 05:31 oof5221

Kim has a strong first​ serve; whenever it is good​ (that is,​ in) she wins the point 70​% of the time. whenever her second serve is​ good, she wins the point 40​% of the time. fifty dash five percent of her first serves and 70​% of her second serves are good. ​(a) what is the probability that kim wins the point when she​ serves? ​(b) if kim wins a service​ point, what is the probability that her 1st serve was​ good?

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