Recent content by bonfire09

I have participated in Kaggle and created a recommender system to predict whether a client would be satisfied or not even though I got around like 60% accuracy in Python using ski-kit learn/matplotlib/etc. I also worked with bagging/boosted trees as well as the standard decision trees to build...

Hi, so currently I am stuck in a situation where I currently accepted a job offer and had 5 other interviews which I never heard back from any yet. (I will have to say no if I hear back I guess and there was one I really was hoping to get but its going to be too late now). These were for data...

I assumed that like each customer pays a certain amount ##p## into the insurance company so ##10000p## is just the total value the customers pay into the company. I take that back I think your right. I don't need ##10000p## rather just ##p## itself## which should be the amount of money the...

Homework Statement There are ##N = 10000## clients of an insurance company. One-half of them will file claims with probability ##p_1 = .05##, another half of them will file claims with probability ##p_2 = .03##. Each claim is worth ##$1000##. Find the Value-at-Risk at the level α = 0.99, that...

Oops now I fixed that. I don't know why I placed that in the first place. So I changed ##\epsilon_1+\epsilon_2## to ##\epsilon_3##. I think it looks correct now.

Homework Statement Suppose that object 1 weighs \theta_1 and object two weights \theta_2. Then each object is weighed once and then together getting three observations y_1,y_2,y_3. The scale gives unbiased weights with normally distributed error (constant variance) Find the least square...

Actually I don't. We talked about limiting distributions and stationary distributions in class but did not cover rate of convergence. In essence I only understand the very basics. So somehow I have to show the rate of convergence with what I have so far.

I checked the eigenvectors. I had them switched. So do I use the formula right below where it "since the eigenvectors are orthonormal..."?

Homework Statement For the following Markov chain, find the rate of convergence to the stationary distribution: \begin{bmatrix} 0.4 & 0.6 \\ 1 & 0 \end{bmatrix} Homework Equations none The Attempt at a Solution I found the eigenvalues which were \lambda_1=-.6 or \lambda_2=1 . The...

I see it is two tailed so I would use ##C=1.645## which would be my critical value.

Homework Statement This is the problem I am given. . It is in he picture below or in the thumbnail. I was also told that since ##n## is big enough that I can use normal approximations. Homework EquationsThe Attempt at a Solution I think that ##C_{\alpha}=C_{0.1}=2.33## which I got off the...

I'm assuming that I should be able to do this by hand then? Or will I have to use maple or some other software to this for me through iteration? Well thanks for you help. I'll try this method out tomorrow and see where I get.

Right I did try to evaluate ##\int_{0}^{1} xf_{x_{(1)}}## but I found it difficult to try to do. I tried to evaluate it on matlab/mathematica and even then it couldn't evaluate it. Not very sure how to go about evaluating the integral.Maybe I'm not seeing it but there could be some way to...

Homework Statement If ##X_1,..,X_n## is a random sample and has a density ##f_X(x)=6x(1-x)## for ##0<x<1##. Let ##X_{(1)}=\min(X_1,..,X_n)##. Find the ##E(X_{(1)})## (Expected Value)? Homework Equations There is an uploaded picture of the pdf I used. The Attempt at a Solution "I've been...

Homework Statement Let ##X## have the pdf ##f_X(x)=\dfrac{1}{\sqrt{2\pi\sigma^2}}e^{\dfrac{-(x-\mu)^2}{2\sigma^2}}## where ##-\infty<x<\infty,-\infty<\mu<\infty,\sigma>0##. Let ##Z=g(X)=\frac{X-\mu}{\sigma}##. Find the pdf and cdf of ##Z##[/B] Homework EquationsThe Attempt at a Solution...