document.write( "Question 458189: 5. Find the normal approximation for the binomial probability that x = 6, where n = 15 and p = 0.7. Compare this probability to the value of P(x=6). \n" ); document.write( "
Algebra.Com's Answer #314415 by edjones(8007)\"\" \"About 
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\"mu=np=15%2A0.7=10.5\"
\n" ); document.write( "\"sigma=sqrt%28n%2Ap%2Aq%29=sqrt%2815%2A.7%2A.3%29=1.77\"
\n" ); document.write( "15C6*.7^6*.3^9=.0116 area of binomial rectangle for 6.
\n" ); document.write( "z=(6.5-10.5)/1.77=-2.26
\n" ); document.write( "area of tail under normal curve=.0119
\n" ); document.write( "z=(5.5-10.5)/1.77=-2.82
\n" ); document.write( "area of tail under normal curve=.0024
\n" ); document.write( ".0119-.0024=.0095 area under the normal curve for 6.
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