document.write( "Question 915389: Ilene did a survey of 360 customers regarding satisfaction with the services on The Swamp Critter Inn and type of customer. A walk-in customer is one who has seen no ads and has not been referred to the Inn. The other customers either saw a TV as or were referred to the Inn (but not both). The results follow. \r
\n" ); document.write( "\n" ); document.write( "Not Satisfied 21 9 5 35
\n" ); document.write( "Neutral 18 25 37 80
\n" ); document.write( "Satisfied 36 43 59 138
\n" ); document.write( "Very Satisfied 28 31 48 107
\n" ); document.write( "Total 103 108 149 360
\n" ); document.write( " Walk-in TV AD Referred Total\r
\n" ); document.write( "\n" ); document.write( "Let's use the following notation for the various events: W=Walk-in, TV= Saw TV Ad, R= Referred, NS= Not Satisfied, N= Neutral, S= Satisfied, and V= Very satisfied. Find the following probabilities correct to four places after the decimal point.\r
\n" ); document.write( "\n" ); document.write( "A) P(NS)
\n" ); document.write( "B) P(NS^c)
\n" ); document.write( "C) P(NS and W)
\n" ); document.write( "D) P(R/NS)
\n" ); document.write( "E) P(NS/R)
\n" ); document.write( "F) P(V or TV)
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #555561 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "	W	TV	R	TOT
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document.write( "NS	21	9	5	35
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document.write( "N	18	25	37	80
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document.write( "S	36	43	59	138
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document.write( "V	28	31	48	107
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document.write( "TOT	103	108	149	360
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document.write( "A. P(NS) = 35/360
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document.write( "B.
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document.write( "C. P(NS and W) = 21/360
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document.write( "D. P(R|NS) =  = 5/35
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document.write( "E. P(NS|R) =  = 5/149
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document.write( "F. P(V OR TV) = 107/360 + 108/360 \n" );
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