In a large city, 72% of the people are known to own a cell phone, 38% are known to own a pager, and 29% own both a cell phone and a pager. Let A be the event that they own a cell phone and B be the event that they own a pager.

a. What proportion of people in this large city own either a cell phone or a pager?
b. What is the probability that a randomly selected person from this city owns a pager, given that the person owns a cell phone?
c. Are the events "owns a pager" and "owns a cell phone" independent?

Question

Looneytunness2207idn Looneytunness2207idn

06-08-2021
Mathematics

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In a large city, 72% of the people are known to own a cell phone, 38% are known to own a pager, and 29% own both a cell phone and a pager. Let A be the event that they own a cell phone and B be the event that they own a pager.

a. What proportion of people in this large city own either a cell phone or a pager?
b. What is the probability that a randomly selected person from this city owns a pager, given that the person owns a cell phone?
c. Are the events "owns a pager" and "owns a cell phone" independent?

Sagot :

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