Let Xn Exp(4), n > 1, be independent random variables. Estimate the probability that 1 S100 2

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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Theorem 26 (Theorem of de Moivre - Laplace) Let X1, X2, ... be independent random variables with Bernoulli(p)
distribution. Let
n
Sn
ΣΧ.
i=1
Then
Sn
- np
< a
Vnp(1 – p)
lim P
= (a),
for every a ER.
51
In particular, when n is large (as a rule of thumb, when n > 30), then the cdf of the rescaled binomial random variable
Sn is approximately equal to the cdf of a standard-normal random variable Z ~ N (0, 1), i.e.
Sn - np
<a - P(Z < a) = (a).
пр(1 — р)
Transcribed Image Text:Theorem 26 (Theorem of de Moivre - Laplace) Let X1, X2, ... be independent random variables with Bernoulli(p) distribution. Let n Sn ΣΧ. i=1 Then Sn - np < a Vnp(1 – p) lim P = (a), for every a ER. 51 In particular, when n is large (as a rule of thumb, when n > 30), then the cdf of the rescaled binomial random variable Sn is approximately equal to the cdf of a standard-normal random variable Z ~ N (0, 1), i.e. Sn - np <a - P(Z < a) = (a). пр(1 — р)
Let Xn
Exp(4), n > 1, be independent random variables. Estimate the probability that
P
S100 2
100
Transcribed Image Text:Let Xn Exp(4), n > 1, be independent random variables. Estimate the probability that P S100 2 100
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