document.write( "Question 1176737: Companies are interested in the demographic of those who listen to the radio programs they sponsor. A radio station has determined that only 20% of listeners phoning into a morning talkback program are male. During a particular week, 200 calls are received by this program.
\n" ); document.write( "a) What is the probability that at least 50 of these 200 callers are male?
\n" ); document.write( "b) What is the probability that more than half of these 200 callers are female?
\n" ); document.write( "c) There is a 30% chance that the number of male callers among the 200 total callers does
\n" ); document.write( "not exceed what? \n" ); document.write( "

Algebra.Com's Answer #804266 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Binomial Distribution:  p = .20 male  q = .80 female   n = 200\r\n" );
document.write( "For comparison: .20*200 = 40\r\n" );
document.write( " P(x ≥ 50m) = 1 - P(x ≤ 49m) = 1 - .9506 = .0474\r\n" );
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document.write( " P(x > 100f) = 1 - P(x ≤ 100f)  = basically 1 or 100%\r\n" );
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document.write( "200*.30 = 60 \r\n" );
document.write( " p(x = 60) = .0002  0r .02%\r\n" );
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document.write( "Wish You the Best in your Studies.\r\n" );
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