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Mathematics 18 Online
OpenStudy (anonymous):

One member from a book club is randomly selected. There is a 40% chance the member is male, and there is a 15% chance that the member is male and finished reading the last book. What is the probability that the member did not finish reading the last book, given that the member is male? Write the probability as a percent. Round to the nearest tenth if needed. _________ %

OpenStudy (misty1212):

what is \(100\%-15\%\)?

OpenStudy (igreen):

There's a 85% chance that a male has NOT finished the book.. We have to multiply that 85% to 40% chance of being a male..

OpenStudy (anonymous):

-0.05

OpenStudy (igreen):

So.. \(80\% \times 40\% =~?\)

OpenStudy (misty1212):

no not at all

OpenStudy (igreen):

How did you get -0.05?

OpenStudy (misty1212):

@iGreen read carefully

OpenStudy (anonymous):

0.34

OpenStudy (misty1212):

What is the probability that the member did not finish reading the last book, GIVEN that the member is male?

OpenStudy (anonymous):

oh and subtracting 100%-15%=

OpenStudy (igreen):

No..that's wrong @Starr_DynastyT 100% - 15% = 100 - 15

OpenStudy (misty1212):

not AND, but rather GIVEN

OpenStudy (igreen):

Oh, sorry I didn't see that part..lol.

OpenStudy (igreen):

So all you have to do is subtract 100 - 15.. @Starr_DynastyT

OpenStudy (anonymous):

85

OpenStudy (anonymous):

so its 85%

OpenStudy (misty1212):

yes dear

OpenStudy (anonymous):

thank you very much to the both of you

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