document.write( "Question 353626: A coin is tossed 7 times. What is the probability that the number of heads obtained will be between 6 and 7 inclusive? \n" ); document.write( "

Algebra.Com's Answer #252717 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Here are the probabilities for each number of heads.
\n" ); document.write( " $\"P%280%29=1%2A%280.5%29%5E%287-0%29%2A%280.5%29%5E0\"$
\n" ); document.write( " $\"P%281%29=7%2A%280.5%29%5E%287-1%29%2A%280.5%29%5E1\"$
\n" ); document.write( " $\"P%282%29=21%2A%280.5%29%5E%287-2%29%2A%280.5%29%5E2\"$
\n" ); document.write( " $\"P%283%29=35%2A%280.5%29%5E%287-3%29%2A%280.5%29%5E3\"$
\n" ); document.write( " $\"P%284%29=35%2A%280.5%29%5E%287-4%29%2A%280.5%29%5E4\"$
\n" ); document.write( " $\"P%285%29=21%2A%280.5%29%5E%287-5%29%2A%280.5%29%5E5\"$
\n" ); document.write( " $\"P%286%29=7%2A%280.5%29%5E%287-6%29%2A%280.5%29%5E6=0.0546875\"$
\n" ); document.write( " $\"P%287%29=1%2A%280.5%29%5E%287-7%29%2A%280.5%29%5E7=0.0078125\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( "P(6 or 7)= $\"P%286%29%2BP%287%29=0.0625\"$
\n" ); document.write( " \n" ); document.write( "

\n" );