Let X1,..., Xn be a random sample from Beta(0, 1) distribution, where 0>0 (a) Show that Ô = x is the mle of 0. -n E, In X (b) Find the distribution of Y = - In X (using section 1.7) (c) Use Part (b) to show that W - E In X, has gamma distribution I'(n, 1/0).

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Please see attached advanced mathematical statistics question below.

part(c)

How to use part (b) [answer part (b) attached] to show or prove that W = -Σln(Xi) has gamma distribution Γ(n, 1/θ)?

 

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b)
Given Y = - In X
The probability density function for X is,
x0-1 (1-x)l-
B(0,1)
Consider,
Y = – In X
- y = In X
e-y = X
dx
- e-y =
dy
Consider, the probability density function for Y is,
(-) -() 1
y) =j
dy
0-1
B(0,1) Fe
y > 0
%D
B(0,1)
Transcribed Image Text:b) Given Y = - In X The probability density function for X is, x0-1 (1-x)l- B(0,1) Consider, Y = – In X - y = In X e-y = X dx - e-y = dy Consider, the probability density function for Y is, (-) -() 1 y) =j dy 0-1 B(0,1) Fe y > 0 %D B(0,1)
Let X1,..., Xn be a random sample from Beta(0, 1) distribution, where 0 > 0
(a) Show that ô
is the mle of 0.
E In X
(b) Find the distribution of Y = – In X (using section 1.7)
(c) Use Part (b) to show that W = -E, In X; has gamma distribution IT(n, 1/0).
(d) show that 20W has x2(2n) distribution.
(e) Using Part (d), find c1, c2 so that P(C <
20n
< c2) = 1-a, for a E (0, 1). Next
obtain a (1 – a)100% CI for 0.
(f) For a
interval found in Example 6.2.6
0.02 and n = 15, compare the length of this interval with the length of the
%3D
%3D
Transcribed Image Text:Let X1,..., Xn be a random sample from Beta(0, 1) distribution, where 0 > 0 (a) Show that ô is the mle of 0. E In X (b) Find the distribution of Y = – In X (using section 1.7) (c) Use Part (b) to show that W = -E, In X; has gamma distribution IT(n, 1/0). (d) show that 20W has x2(2n) distribution. (e) Using Part (d), find c1, c2 so that P(C < 20n < c2) = 1-a, for a E (0, 1). Next obtain a (1 – a)100% CI for 0. (f) For a interval found in Example 6.2.6 0.02 and n = 15, compare the length of this interval with the length of the %3D %3D
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