Determining the random variable
Let x1, x2...xn be independent and N(o,1) distributed. Let Sn= (X^2)1+...+(X^2)n. Show that sn is a random variable x^2-distributed with d.f=n ( use Moment generating function)
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Farest packing's Roe last year was only 3 percent but its management developed a new operating plan designed to improve things.the new plan calls for total debt ratio of 60 percent which will result in interest charges of $300,000 per year.
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Let X1,...,Xn1 be an iid sample from N(u1,o^2) and let Y1,...,Yn2 be an iid sample from N(u2,o^2), where parameters u1,u2, and o^2 are unknown. Suppose that two samples are independent. Find a 95% confidence interval for u1-2u2.
A particle with charge Q is located on the axis of a disk of radius R, at a distance' b' below the plane of the disk. What must R equal in terms of b if one-fourth of the electric flux from the charge is to pass through the disk? please show all s
How far has the mass moved when its velocity is 2.43 m/s? Friction exerts a constant moment of.32 Nm. Specs - Ring: m = 300 g, r = 7 cm Disk: m = 500 g, r = 9 cm.
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