SOLUTION: The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.
Admis
Algebra.Com
Question 1168129: The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.
Admissions Probability
1,400 .6
1,500 .3
1,200 .1
What is the expected number of admissions for the fall semester?
Compute the variance and the standard deviation of the number of admissions. (Round your standard deviation to 2 decimal places.)
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
E(X)=sum of x*p(x)
=840+450+120=1410 adm
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variance is sum of (X-x)^2*p(x)
=100*0.6+2430+4410=6900 adm^2
-
sd= sqrt(V)=83.07
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