document.write( "Question 251270: the probability that a customer will buy a shirt is 0.4.
\n" ); document.write( "A customer buys a tie 50% of the time when a shirt is purchased, but only 10% the time when a shirt is not purchased.
\n" ); document.write( "Find the probability that a customer buys the following:
\n" ); document.write( "a. a shirt and a tie
\n" ); document.write( "b. a tie
\n" ); document.write( "c. a shirt or a tie
\n" ); document.write( "d. a tie but not a shirt
\n" ); document.write( "

Algebra.Com's Answer #182966 by vksarvepalli(154)\"\" \"About 
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a)a shirt and a tie \r
\n" ); document.write( "\n" ); document.write( "probability=0.4*0.5=0.2\r
\n" ); document.write( "\n" ); document.write( "b)a tie\r
\n" ); document.write( "\n" ); document.write( "prob. = 0.1+0.4*0.5 = 0.3\r
\n" ); document.write( "\n" ); document.write( "c)a shirt or a tie\r
\n" ); document.write( "\n" ); document.write( "prob. = 0.4+0.1 =0.5\r
\n" ); document.write( "\n" ); document.write( "d)a tie but not a shirt\r
\n" ); document.write( "\n" ); document.write( "prob. = 0.1
\n" ); document.write( "
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