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Category > Statistics Posted 14 May 2017 My Price 3.00

In a local school 80% of the students carry a backpack

In a local school, 80% of the students carry a backpack ( B ) or a wallet ( W ). Forty percent carry only a backpack, and 30% carry only a wallet. If a student is selected at random, find the probability that the student carries both a backpack and a wallet. ( Note that the word only makes this exercise different from the example on page 320. )

 

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Alpha Geek
(8)
Status NEW Posted 14 May 2017 12:05 PM My Price 3.00

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file 1494765743-Answer.docx preview (99 words )
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