SOLUTION: Eighty-five percent of Americans favor spending government money to develop alternative sources of fuel for automobiles. For a random sample of 120 Americans, find the mean, varian

Algebra.Com
Question 460885: Eighty-five percent of Americans favor spending government money to develop alternative sources of fuel for automobiles. For a random sample of 120 Americans, find the mean, variance and standard deviation for the number who favor government spending for alternative fuels.
Answer by edjones(8007)   (Show Source): You can put this solution on YOUR website!
p=.85, q=.15, n=120
mean=120*.85=102
variance=.85*.15*120=15.3
standard deviation=sqrt(15.3)=3.91
.
Ed

RELATED QUESTIONS

Seventy-seven percent of Americans favor spending government money to develop... (answered by Boreal)
A newsgroup is interested in constructing a 90% confidence interval for the proportion of (answered by Boreal)
A newsgroup is interested in constructing a 90% confidence interval for the proportion of (answered by Boreal)
The half-life of a radioactive substance is one hundred twenty-five days. How many days... (answered by Theo,Edwin McCravy,ikleyn,greenestamps,MathTherapy)
One person had a habit of spending money according to dates.one night He calculated total (answered by stanbon,ikleyn)
54 percent of the wood is used for fuel calculate the angle for the fuel sector (answered by Alan3354)
Data from 1988 through 2000 showing the percentage of Americans for and against the death (answered by funmath)
Christine is a toll booth worker for the Abraham Lincoln memorial tollway and she wants... (answered by JulietG)
Christine is a toll booth worker for the Abraham Lincoln memorial tollway and she wants... (answered by JulietG)