Hi,
can someone show how the roots were found here? Thanks
8. Let {Xn, n = 1, 2, . . . } and (, , n = 1, 2, . . . } be two sequences of random variables, defined on the sample space Suppose that we know . Xn → X, G.8 Prove that XnYX+Y. 8. Let {Xn, n = 1, 2, . . . } and (, , n = 1, 2, . . . } be two sequences of random variables, defined on the sample space Suppose that...
2. (a) We want to find the root x of the function f(x); that is, we need f(r) = 0 . This can be done using Newton's method, making use of the iterative formula f(xn) Show that the sequence ofiterates (%) converges quadratically if f'(x) 0 in some appropriate interval of x-values near the root χ 9 point b) We can get Newton's method to find the k-th root of some number a by making it solve the non-linear cquation...
A random variable X has probability density function f(x)=(a-1)x^(-a),for x>=1. (a) For independent observations x1,...,xn show that the log-likelihood is given by, l(a;x1,...,xn)=nlog(a-1)-a (b) Hence derive an expression for the maximum likelihood estimate for ↵. (c) Suppose we observe data such that n = 6 and 6 i=1 log(xi) = 12. Show that the associated maximum likelihood estimate for ↵ is given by aˆ ↵ =1 .5. logri We were unable to transcribe this image
2. Let Xn ~ NG, Intuitivel y, Xn will concentrate at as n -o. In this question, we will justify this intuition using the convergence concepts we learned (a) Show that Xn, 4> 1/2. (Recall for a random variable X which takes value 1/2 with all probability, its c.d.f. Fo is given by Fo(t) 0 for all t< 1/2, Fo(t)1 for all t 2 1/2. You need then to show the c.d.f. of Xn, say F(t), converges to Fo(t) at...
1. Suppose that X Unif(0, 30) and we draw a random sample X1,..., Xn Find the MME and compute its relative efficiency to 6, = 2X1-3X2. 2. In class, I showed the below picture. Here, I have changed the vertical axis from variance to SD. In this new picture, how can we visualize the MSE? How does this way of seeing the MSE help us decide which of two (possibly biased) estimators is more efficient? SD 04 Bias (B) 0...
Let X1, . . . , Xn ∼ Geo(θ), f(x)= θ(1-θ)^x, and we wish to test H0 : θ ≤ 1/3 vs H1 : θ > 1/3. a) Using the full sample, X1....Xn, find the form of the UMP test for the hypotheses H0: θ=1/3 vs H1: θ=1/2. b)If n=15 and α = 0.1, what is the rejection region and the size of test in (a)?
Suppose that functions fn : [0, 1] → R, for n = 1,2. . . ., are continuous and f : [0, 1] → R is also continuous. Show that fn → f uniformly if and only if fn(xn) → f(x) whenever xn → x. Suppose that functions fn : [0, 1] → R, for n = 1,2. . . ., are continuous and f : [0, 1] → R is also continuous. Show that fn → f uniformly if...
Please answer A, B, and C in full 2. Let f() € F[2] be a separable polynomial with roots {u1, ..., Un} contained in some splitting field K of f(x) over F. Define A= || (ui-u) = (ui - U2) (u - u3) ...(ui-un)(uz - u3) ..(un-1 - Un) EK. (a) (15 points) Consider GalpK < Sn by looking at its action on the set of roots for f(x). Show that if Te Galo K is a transposition then (A)...
Suppose X1, X2, . . . , Xn are i.i.d. Exp(µ) with the density f(x) = for x>0 (a) Use method of moments to find estimators for µ and µ^2 . (b) What is the log likelihood as a function of µ after observing X1 = x1, . . . , Xn = xn? (c) Find the MLEs for µ and µ^2 . Are they the same as those you find in part (a)? (d) According to the Central Limit...
If lim,--a (f ()) = If lim 2-7a+ f (x)), Then we know that f is continuous in a Seleccione una O a. False b. True Quitar mi selección