Question: Survey data, based on 65,000 mobile phone subscribers, shows that 44% of the subscribers use smart-phones (Forbes, December15, 2011). Moreover, 51% of smart-phone users are

Survey data, based on 65,000 mobile phone subscribers, shows that 44% of the subscribers use smart-phones (Forbes, December 15, 2011). Moreover, 51% of smart-phone users are women.
a. Find the probability that a mobile phone subscriber is a woman who uses a smart-phone.
b. Find the probability that a mobile phone subscriber is a man who uses a smart-phone.

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