Question Si una persona quiere comprar un boleto de un sorteo, en el que puede ganar un primer premio de $500 ´o un segundo premio de $200 con probabilidades de: 0.001 y 0.003 respectivamenteSi una persona quiere comprar un boleto de un sorteo, en el que puede ganar un primer premio de $500 ´o un segundo premio de $200 con probabilidades de: 0.001 y 0.003 respectivamente. a) Identifique la variable aleatoria b) Represente en una tabla la distribuci´on de probabilida de la variable aleatoria. c) ¿Cu´anto esperar´ıa pagar por el boleto? d) Cu´al es la probabilidad de obtener algu´n premio? e) Cu´al es la probabilida de no obtener premio alguno?If a person wants to buy a raffle ticket, they can win a first prize of $ 500 or a second prize of $ 200 with odds of: 0.001 and 0.003 respectively. a) Identify the random variable b) Represent in a table the probability distribution of the random variable. c) How much would you expect to pay for the ticket? d) What is the probability of obtaining a prize? e) What is the probability of not obtaining any prize?

Cloud seeding, a process in which chemicals such as silver iodide and frozen carbon dioxide are introduced by aircraft into clouds to promote rainfall was widely used in the 20 -th century. Recent research has questioned its effectiveness [Journal of Atmospheric Research (2010, Vol. 97 (2), pp. 513-525)]. An experiment was performed by randomly assigning 52 clouds to be seeded or not. The amount of rain generated was then measured in acre-feet. Here are the data for the unseeded and seeded clouds: Unseeded: Seeded: Construct a frequence distribution for the combined cloud-seeding rain measurements. Use 6 bins. Select the correct histogram.

2. Consider the mechanical system shown in Figure. We assume that the system is linear. The external force u(t) is the input to the system, and the displacement y(t) of the mass is the output. The displacement y(t) is measured from the equilibrium position in the absence of the external force. This system is a single-input, single-output system. From the diagram, the system equation is This system is of second order. This means that the system involves two integrators. Let us define state variables ı(t) and x2(t) as u(t) x1(t)- y(t) x2(t)-t) M-5 kg, b-4Ns/m, k-5 N/m, u(t)-step function a) Obtain state space representation of the mechanical system (both theoretically and MATLAB) y0) b) Convert the state space to transfer function in Matlab c) Obtain block diagram of the mechanical system (both theoretically, MATLAB and Simulink)

please answer the top and bottom questionas I'm almost out of credit. Thank you! = Irradiance profiles at an open ocean station were found to fit a value for KPAR = 0.025 m-1 in the near surface water column. Using this information, calculate the euphotic depth and the 1st optical depth at this location. Comment on whether at this location it is likely to be case 1 or case 2 waters? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). Β Ι Ο Ꭶ Paragraph Arial 10pt Ix OG Q 6 ते = = = ... Ki AA X2 X, ABC > [ † {;} © Ra Ky + P O WORDS POWERED BY TINY QUESTION 3 points Save Answe List 3 reactive oxygen species typically photochemically produced in seawater.

please help MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Accrotime is a manufacturer of quartz crystal watches. Accrotime researchers have shown that the watches have an average life of 36 months before certain electronic components deteriorate, causing the watch to become unreliable. The standard deviation of watch lifetimes is 4 months, and the distribution of lifetimes is normal. (ə) If Accrotime guarantees a full refund on any defective watch for 2 years after purchase, what percentage of total production will the company expect to replace? (Round your answer to two decimal places.) (b) If Accrotime does not want to make refunds on more than 12% of the watches it makes, how long should the guarantee period be (to the nearest month)? months

Are the following systems (i) Linear? (ii) Causal? (iii) Time-invariant? Consider x to be the input signal and justify your answers, specifying key conditions/assumptions as needed. (a) y[n] = x[n] +1 (b) y[n] = x[-n] (c) y[n] = z[n + 1] – x[n]

I need this exercise to be implemented in MATLAB. (NotSimulink) ܕ EXAMPLE 2.1. This example illustrates the ability of the adaptive linear combi- ner, trained with the LMS algorithm, to estimate the parameters of a linear model. The input data consist of 1,000 zero-mean Gaussian random vectors with three components, that is, re R3xl; and the bias is set to zero, or B = 0. The variances of the components of r are 5, 1, and 0.5, respectively. The assumed linear model is given by b = [1,0.8, -1]. To generate the target values (desired outputs), the 1,000 input vectors are used to form a matrix X = (x ? ... $1,000), and the desired outputs are computed according to d=b'x. The covariance matrix of the vector input signals can be estimated as 1.000 C Irx= XXT 1,000 1,000 h=1 [30]. Using the LMS algorithm in Table 2.1, with a value of Ho = 0.9/Amax = 0.1936, where Imax is the largest eigenvalue of the covariance matrix Cy, and t = 200 (the search time constant), the input vectors along with the associated desired output values are presented to the linear combiner. The criter- ion used to terminate the learning process involved monitoring the square root of the MSE values every time step k. The learning process was terminated when VJ = leik) < 10-8, where elk) = dík) – W" (k)(k). The initial values of the synaptic weight vector were selected as zero-mean Gaussian random numbers with a variance of 0.25, Winitial = (-0.3043, -0.8195,0.3855)". The LMS learning process was terminated after only 204 iterations (training epochs). In other words, after the first 204 input vectors along with the associated desired output values were presented, the network converged. The final synaptic weight matrix was given as wrinat = [1.000000, 0.800000, -1.0000001", which is exactly the assumed linear model b (out to six decimal places). In fact, the L2-norm of the difference between the linear model band the final weight vector is | 5-Wfinal ||2= 1.505404 x 10-7. Figure 2.17 shows the progress of the learning rate parameter as it is adjusted according to the search-then-converge schedule. As we can see from the plot, at the beginning of training u does not change much; then toward the end of training it becomes much smaller. Figure 2.18 shows the root mean square (RMS) value of the performance measure, that is, VJ, as training of the network progresses. This exercise is similar to problems in system identification of estimating a parameter vector associated with a dynamic model of a system given only input/output data from the system, that is, parametric system identification [31]. W finai $) X():11C1, 5000) )- d=6x X(2,:) = randa (1, 1000 X(2, ) d=$3x3 3 SX1000) X(3,:) = sqrt(0.5) Condn (11000) : {{x1000) scalar coux-x***/1000 randa (N) normally distrand. numbers I rand (0) NXN uniform dist the interval (0.0, 1.0)