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Mathematics 8 Online
OpenStudy (anonymous):

METAL!!! If 21% of males and 15% of females in a given state play the guitar, what is the probability that a randomly selected subject in the state plays the guitar, given that the subject is male? 0.15 0.21 0.79 0.85

OpenStudy (luckycoins888):

i help

OpenStudy (luckycoins888):

0.15

OpenStudy (amistre64):

since 21% of males play the guitar ... then whats the probability that a male play the guitar?

OpenStudy (amistre64):

21 percent literally mean: 21 out of 100, 21/100

OpenStudy (luckycoins888):

@amistre64 you have a much better chance than me of being right

OpenStudy (luckycoins888):

:-]

OpenStudy (amistre64):

oh ive been known to be wrong ;)

OpenStudy (anonymous):

do i have to divide 21 by 100? how did you get .15 @luckycoins888

OpenStudy (luckycoins888):

i thought it had the most chance to be RIGHT but it turns out i was WRONG.

OpenStudy (luckycoins888):

listen to @amistre64 he/she is more right than me which is why he/she has a smartscore of 99 while i have a stinkking 62

OpenStudy (anonymous):

lol okay! @amistre64 i divide 21 by 100 correct? do i need to do anything with the 15%?

OpenStudy (amistre64):

do we know how much of the population is male?

OpenStudy (anonymous):

yes 21%

OpenStudy (amistre64):

thats not stated in your problem. male and guitar = .21 of the male population female and guitar = .15 of the female population |dw:1419274689560:dw|

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