Numerade

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A filter has the given frequency response. a) Estimate the gain ratio at f=1000Hz. b) Determine the critical (cutoff) frequency of the filter. c) What is Vout of the filter for Vin=3V @ f=1000Hz?

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Which of the following is a volatile acid? Phosphoric acid Sulfuric acid Lactic acid Carbonic acid

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A man sits down next to you and gives you the offer to play his game. In this game your payout is a uniformly random number from the interval (0, 1). However, he mentions that you can regenerate your number as many times as you’d like (in which you take the maximum number) but it will cost you 4c for each generation. What is the expected value of this game?

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Problem 4: (Queueing Systems) [30 points] An electricity provider receives on average 7.2 service requests per day. The requests are received randomly according to Poisson distribution. The company sends its service teams to attend each request and a team needs 2 hours for each request (0.25 of a working day). Each service team costs $1000 per day (due to (salary, overhead, traveling costs and other). The company earns $1000 from each request serviced. The company ensures to customers very fast response service. Therefore they promise to pay to customers $200 per each day of waiting (excluding the actual work on the request). Answer the following based on the information provide above. (a) (5 points) What is the minimum number of the engineers $c$ that the company needs to have? (b) (5 points) Using the Kendall's notation, indicate what type of queueing system it is. (c) (5 points) Compute the probability of not waiting, for the obtained minimum number of engineers (d) (5 points) Compute the total expected repair time (waiting + actual repair) for each request for the obtained minimum number of engineers Hint: Use the Wilkinson chart to estimate the expected number in the queue. (e) (5 points) Compute the total expected profit per day given the minimum number of engineers (f) (5 points) What will be the change in earnings if one extra engineer is added?

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The continent measures 3,300 miles at its widest point-from St. John's, Newfoundland, to the Pacific Coast. From Alaska to Mexico, the continent extends 4,900 miles. Europe is made up of many small nations. Unlike it, North America is composed of only three large nations: Canada, the United States, and Mexico. Which opening sentence goes best with the details in the above paragraph? A. North America truly stretches "from sea to shining sea"! B. The countries of North America formed NAFTA. C. Mexico is best known for dry, hot summers. D. Canada is the largest country in North America.

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2. Realiza las divismenes ente polimomios a) $ \left(6 x^{2}-3 x+2\right)+(2 x+1)= $ b) $ \left(4 x^{4}-6 x^{3}+3 x-1\right)+\left(x^{2}-3\right)= $ c) $ \left(2 y^{x}+9 y^{2}+5 y-6\right)+(2 y+3) $ d) $ \left(\frac{5}{3} a+\frac{1}{16} a b+\frac{5}{2} a b\right)+\left(\frac{1}{2} a-\frac{1}{4} b\right) $

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Differentiate. y = xe^{-2x} + 7e^{-x} + x^4 Choose the correct answer below. A. \frac{dy}{dx} = -2xe^{-2x} + e^{-2x} - 7e^{-x} - 4x^3 B. \frac{dy}{dx} = -2xe^{-2x} - e^{-2x} - 7e^{-x} + 4x^3 C. \frac{dy}{dx} = -2xe^{-2x} + e^{-2x} - 7e^{-x} + 4x^3 D. \frac{dy}{dx} = -2xe^{-2x} + e^{-2x} + 7e^{-x} + 4x^3

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what is a common unifying characteristic of all topical areas of psychology

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For both K-means and hierarchical clustering, the number of clusters has to be decided upfront. Question 3 Select one: True False

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2. (25 points) Statistical Independence, Conditional Probability, and Total Probability (a) A detection device consists of three sensors each with probability $p = 0.95$ of detecting a certain chemical such as carbon monoxide when it is present, independent of the other two sensors. The device sounds an alarm if a majority of the sensors detects the chemical. What is the probability that the device successfully detects the chemical if it is present?

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james h.