A coin is tossed 6 times. Find the probabilities of getting the following:
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document.write( "a.) Exactly 3 heads
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document.write( "Here is the binomial rule:\r\n" );
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document.write( "If
is the probability of getting
success in
trial,\r\n" );
document.write( "and
is the number of trials, and
, then the \r\n" );
document.write( "probability of getting exactly
successes out of the
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document.write( "trials is\r\n" );
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document.write( "Here a success will be a head on a coin, and a trial\r\n" );
document.write( "will be a toss. Here
is the probability \r\n" );
document.write( "of getting
head in
trial. There are
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document.write( "trials (tosses), so
. Then the probability of \r\n" );
document.write( "getting exactly
heads out of the
trials \r\n" );
document.write( "is gotten by substituting in that expression, with \r\n" );
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document.write( "Edwin
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