=+27.18. 21.21 Stirling's formula. Let S ,, = X, + . . . +X ,,, where the
Question:
=+27.18. 21.21 Stirling's formula. Let S ,, = X, + . . . +X ,,, where the X ,, are indepen-
dent and each has the Poisson distribution with parameter 1. Prove succes-
sively
- n F
-"E(") k ="
n - k n" +(1/2)e -1
(a) E In n!
Sp -n
(b)
=N7.
Vn S, - n 1
(c) E
-EN-]=
Vn 12 TT
(d) n! ~ 1/2" n" +(1/2) e **
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Related Book For
Probability And Measure Wiley Series In Probability And Mathematical Statistics
ISBN: 9788126517718
3rd Edition
Authors: Patrick Billingsley
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