document.write( "Question 886377: Problem:
\n" ); document.write( "Grade___Students__>8 HRS.__<8 HRS.
\n" ); document.write( "A_______13_______12_______1
\n" ); document.write( "B_______10_______8________2
\n" ); document.write( "C_______8________6________2
\n" ); document.write( "D_______9________2________7
\n" ); document.write( "F_______10_______1________9
\n" ); document.write( "What is the probability of a randomly selected student having earned an A or a B on the exam given they devoted more than 8 hours to studying for the exam?
\n" ); document.write( "a. 0.57
\n" ); document.write( "b. 0.47
\n" ); document.write( "c. 0.69
\n" ); document.write( "d. 0.76\r
\n" ); document.write( "\n" ); document.write( "I would need the answer (a,b, c or d) plus how to arrive at the answer so I can apply that to similar problems. This is so confusing. Thank you for your help!
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Algebra.Com's Answer #535900 by rothauserc(4718)\"\" \"About 
You can put this solution on YOUR website!
There are 29 students who studied more than 8 hours, of those students 20 got an A or a B, therefore
\n" ); document.write( "therefore probability is 20/29 = 0.689655172 = 0.69
\n" ); document.write( "answer is c
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