document.write( "Question 416737: In the tests of a new pharmaceutical product, data were
\n" ); document.write( "collected for use in the approval process required by the
\n" ); document.write( "U.S. Food and Drug Administration (FDA). Some participants
\n" ); document.write( "were given a placebo, an inert substance that
\n" ); document.write( "looks like the drug; others were given the drug. The
\n" ); document.write( "data are shown in the following table:
\n" ); document.write( "Drug: No Help 22 Help 47
\n" ); document.write( "Placebo: No Help 31 Help 20
\n" ); document.write( "What is the probability that:\r
\n" ); document.write( "\n" ); document.write( "a) the participants perceived that their “medication”
\n" ); document.write( "helped if they received the drug?\r
\n" ); document.write( "\n" ); document.write( "b) the participants perceived that their “medication”
\n" ); document.write( "helped if they received the placebo?\r
\n" ); document.write( "\n" ); document.write( "c) the participants perceived that their “medication”
\n" ); document.write( "helped?\r
\n" ); document.write( "\n" ); document.write( "I'm having a huge issue with this. Could you please show your work, or just explain how it's done so I can learn the method as well as understand what the answers are? Thanks so much!!!! \n" ); document.write( "

Algebra.Com's Answer #291982 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "Hi
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document.write( "          No Help  Help  Total
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document.write( "Drug:       22     47    69
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document.write( "Placebo:    31     20    51
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document.write( "Total       53     67    120
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document.write( "What is the probability that: 
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document.write( "a) the participants perceived that their “medication”
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document.write( "helped if they received the drug?  47/69
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document.write( "b) the participants perceived that their “medication”
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document.write( "helped if they received the placebo? 20/51
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document.write( "c) the participants perceived that their “medication”
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document.write( "helped?  67/120\r
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