Alpha Geek

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  • bachelor in business administration
    Polytechnic State University Sanluis
    Jan-2006 - Nov-2010

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    Polytechnic State University
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Category > Business & Finance Posted 06 Aug 2017 My Price 7.00

Rex is a smart fellow. He gets an A in a course 80% of the time

Rex is a smart fellow. He gets an A in a course 80% of the time. Still, he likes his leisure, only studying for the final exam in half of the courses he takes. Nevertheless, when he does study, he is almost sure (95% likely) to get an A. Assuming he got an A, how likely is it he studied? If someone estimates the above to be 75%, what error are they committing? Explain.

 

 

Answers

Alpha Geek
(8)
Status NEW Posted 06 Aug 2017 01:08 PM My Price 7.00

P(s-----------tud-----------ied-----------/A)----------- = -----------P(A-----------/st-----------udi-----------ed)----------- * -----------[P(-----------stu-----------die-----------d)/-----------P(A-----------)] -----------= .-----------95 -----------* (-----------.5 -----------/ .-----------8) -----------= .-----------593-----------75 -----------Hen-----------ce -----------the----------- re-----------qui-----------red----------- li-----------kel-----------iho-----------od -----------is -----------59.-----------375-----------% o-----------nly-----------. A-----------fte-----------r k-----------now-----------ing----------- th-----------at -----------he -----------has----------- go-----------r

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