Mathematics, 29.02.2020 04:46 jwhit28
In testing a certain kind of missile, target accuracy is measured by the average distance X (from the target) at which the missile explodes. The distance X is measured in miles and the sampling distribution of X is given by:
X 0 10 50 100
P(X) 1⁄40 1/20 1⁄10 33⁄40
Calculate the variance of this sampling distribution.
a) 27.6
b) 5138.7
c) 761.0
d) 253.7
e) 88.0
f) None of the above
Answers: 1
Therefore Variance is 761
5
8250
Now substitute the values in the above formula we get
Therefore 
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