document.write( "Question 1043351: 30 percent of households say they would feel secure if they had $50,000 in savings. You randomly select 8 households and ask them if they would feel secure if they had $50,000 in savings. Find the probability that the number that say they would feel secure is (a) exactly five, (b) more than five, and (c) at most five. \n" ); document.write( "

Algebra.Com's Answer #658522 by Boreal(15235) $\"\"$ $\"About$

You can put this solution on YOUR website!
exactly 5: 8C5(0.3)^5(0.7)^3=66*0.000833=0.055 (rounded at end)
\n" ); document.write( "6:8C6(0.3)^6(0.7)^2=0.010
\n" ); document.write( "7:=8(0.3)^7)(0.7)=0.001
\n" ); document.write( "8:0.3^8=0.00007
\n" ); document.write( "Greater than 5, the last three: 0.011
\n" ); document.write( "At most 5 is everything else, the complement of greater than 5, and that is 0.989. \n" ); document.write( "

\n" );