document.write( "Question 238622: Can you please help with the following binomial distributions!!!!!\r
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\n" ); document.write( "\n" ); document.write( "1. Apprx 10.3% of americans high school students drop ou bf graduation. Choose 10 students entering school at randon, find the proability
\n" ); document.write( "a. no more than 2 drop out
\n" ); document.write( "b. at least 6 graduate
\n" ); document.write( "c. all 10 stay and graduate\r
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\n" ); document.write( "\n" ); document.write( "2. The % of couples where both parties are in the labor force is 52.1% choose 5 couples at random and find the proability that none of the couples have both persons working
\n" ); document.write( "a. more than 3 couples have both persons in the labor force
\n" ); document.write( "b. fewer than 2 of the couples have both parties working\r
\n" ); document.write( "\n" ); document.write( "3. It has been reported that 83% of federal empleyees use email, if a sample of 200 employees is selected find the mean, varience, and standard deviation of the number who use email.
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Algebra.Com's Answer #175431 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Can you please help with the following binomial distributions!!!!!
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\n" ); document.write( "Comment: I will be using a TI calculator to get the numerical answers.
\n" ); document.write( "You will need a calculator or binomial charts for these problems.
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\n" ); document.write( "1. Apprx 10.3% of americans high school students drop out bf graduation. Choose 10 students entering school at randon, find the proability
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\n" ); document.write( "These are binomial with n=10, p=0.103
\n" ); document.write( "a. no more than 2 drop out
\n" ); document.write( "P(0<= x <=2) = binomcdf(10,0.103,2) = 0.9245
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\n" ); document.write( "b. at least 6 graduate
\n" ); document.write( "P(6 <= x <= 10) = 1 - binomcdf(10,0.103,5) = 0.0001735
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\n" ); document.write( "c. all 10 stay and graduate
\n" ); document.write( "P(x = 10) = binompdf(10,0.103,10) = 0.0000000001344
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\n" ); document.write( "\n" ); document.write( "2. The % of couples where both parties are in the labor force is 52.1% choose 5 couples at random and find the proability that none of the couples have both persons working
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\n" ); document.write( "Binomial with n=5, p=0.521
\n" ); document.write( "P(x = 0) = binompdf(5,0.521,0) = 0.0252
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\n" ); document.write( "a. more than 3 couples have both persons in the labor force
\n" ); document.write( "= 1 - binomcdf(5,0.521,3) = 0.2149
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\n" ); document.write( "b. fewer than 2 of the couples have both parties working
\n" ); document.write( "P(0 <= x <= 1) = binomcdf(5,0.521,1) = 0.1624----
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\n" ); document.write( "3. It has been reported that 83% of federal empleyees use email, if a sample of 200 employees is selected find the mean, varience, and standard deviation of the number who use email.
\n" ); document.write( "mean = np = 0.83*200 = 166
\n" ); document.write( "variance = npq = 166*0.17 = 28.22
\n" ); document.write( "std = sqrt(28.22) = 5.3122
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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