Let x1, X2. ... , Xn d N(4, 62), where HE R and o> 0 are unknown parameters. Consider the sample variance 1 s2. E(x; – Xn² n- 1 i=1 Find var(s2). The following "answers" have been proposed. (a) a2/n. (b) 204/(n – 1). (c) o2(n – 1). (d) 204n. (e) None of the above. The correct answer is (a) (b) (c) (d) (e) N/A (Select One)

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Let x1, X2, ... , Xn " N(µ, o2), where µ e R and o> o are unknown parameters. Consider the sample variance
E(x; – Xn)?
n -
Find var(s2).
The following`answers" have been proposed.
(a) o2¾n.
(b) 2а4(п — 1).
(c) o2(n – 1).
(d) 204n.
(e) None of the above.
The correct answer is
(a)
(b)
(c)
(d)
(e)
N/A
(Select One)
Transcribed Image Text:iid Let x1, X2, ... , Xn " N(µ, o2), where µ e R and o> o are unknown parameters. Consider the sample variance E(x; – Xn)? n - Find var(s2). The following`answers" have been proposed. (a) o2¾n. (b) 2а4(п — 1). (c) o2(n – 1). (d) 204n. (e) None of the above. The correct answer is (a) (b) (c) (d) (e) N/A (Select One)
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