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QUESTION 1 The following table contains yearly returns on Target and on BMW from 2022 to 2025: Year | 2022 | 2023 | 2024 | 2025 ------- | -------- | -------- | -------- | -------- Return on Target | 12 | 7 | 13 | 16 Return on BMW | 13 | 16 | 12 | 11 1.1. Calculate the mean of the return on Target and the mean of the return on BMW. 1.2. Calculate the variance of the return on Target and the variance of the return on BMW; 1.3. Calculate the standard deviation of the return on Target and the standard deviation of the return on BMW. 1.4. Calculate the Return per unit of Risk Criterion (RRC) for the return on Target and for the return on BMW. 1.5. Would you invest in BMW or Target? Why? 1.6. Compute the covariance between the return on Target and the return on BMW. Is the relationship between the return on Target and that on BMW positive? Why or why not? 1.7. Compute the coefficient of correlation between the return on Target and the return on BMW. Is the relationship between the return on Target and the return on BMW weak? Why or why not? QUESTION 2 Construct and interpret the confidence interval for the population mean $\mu$. The mean and the standard deviation of a random sample of 49 measurements are: $\bar{X}=60$ $S=3$ Assume that the error level is 10%; that is, $\alpha=10\%$. QUESTION 3 Construct and interpret the confidence interval for the gas price in Missouri. A random sample of 25 gas stations throughout Missouri was used. The following is the summary statistics of the sample: $\bar{X}=3.4$ $S=1.2$ Assume that the error level is 10%; that is, $\alpha=10\%$. QUESTION 4 Conduct the following test of hypothesis about the population mean $\mu$: $H_0: \mu \le 40$ $H_A: \mu > 40$ The mean and the standard deviation of a random sample of 36 measurements are: $\bar{X} = 42$ $S=4$ Assume that the error level is 5% ($\alpha=5\%$). QUESTION 5 Conduct the following test of hypothesis about the population mean $\mu$: $H_0: \mu = 40$ $H_A: \mu \ne 40$ The mean and the standard deviation of a random sample of 16 measurements are: $\bar{X} = 42$ $S=2$ Assume that the error level is 1% ($\alpha=1\%$).

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1. (7 points total) Suppose we randomly sample 510 patients from Haiti who have HIV/AIDS and we are interested in their average CD4 cell count numbers. Their average CD4 count is 282.35 cells/mm3 with a standard deviation of 35.83 cells/mm3. (a) (2 points) What is the distribution of the sample average of the CD4 cell counts.

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ball is thrown vertically upwards with initial speed of 80ft/sec from base of a 50ft cliff

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A satellite in geostationary orbit is used to transmit data via electromagnetic radiation. The satellite is at a height of 35,000 km above the surface of the earth, and we assume it has an isotropic power output of 1.0 kW (although, in practice, satellite antennas transmit signals that are less powerful but more directional). Reception devices pick up the variation in the electric field vector of the electromagnetic wave sent out by the satellite. Given the satellite specifications listed in the problem introduction, what is the amplitude E0 of the electric field vector of the satellite broadcast as measured at the surface of the earth? Use ϵ0=8.85×10−12C/(V⋅m) for the permittivity of space and c=3.00×108m/s for the speed of light. Imagine that the satellite described in the problem introduction is used to transmit television signals. You have a satellite TV reciever consisting of a circular dish of radius R which focuses the electromagnetic energy incident from the satellite onto a receiver which has a surface area of 5 cm2 . How large does the radius R of the dish have to be to achieve an electric field vector amplitude of 0.1 mV/m at the receiver? For simplicity, assume that your house is located directly beneath the satellite (i.e. the situation you calculated in the first part), that the dish reflects all of the incident signal onto the receiver, and that there are no losses associated with the reception process. The dish has a curvature, but the radius R refers to the projection of the dish into the plane perpendicular to the direction of the incoming signal.

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The proposition that, if bargaining is costless and property rights are well-defined, the market can achieve an efficient outcome is the: Group of answer choices property rights paradigm. efficient environment paradigm. Coase theorem. market rights theorem.

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Compared to the situation before international trade, after the United States exports a good production in the United States ________ and consumption in the United States ________. Question content area bottom Part 1 A. increases; increases B. decreases; decreases C. decreases; increases D. increases; decreases

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3-66. A wire of resistance 5 \Omega is connected to a battery whose emf is 2 V and whose internal resistance is 1.0 \Omega. In 2.0 min (a) how much energy is transferred from chemical to electric form? (b) How much energy appears in the wire as thermal energy? (c) Account for the differences between (a) and (b)

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Element-wise division: Convert pounds to kilograms Assign row array weightKilo with the corresponding weight in kilograms. Use the following conversion: kg = lb / 2.2 Your Function 1 function weightKilo = ConvertToKilo(weightPounds) 2 3 weightPounds= [100 190 163 211]; [20 25 30 35]; 4 5 weightKilo = weightPounds/2.2; 6 7 8 9 end Code to call your function 1 ConvertToKilo([100, 190, 163, 211]) Assessment Check if ConvertToKilo([100, 190, 163, 211]) returns [45.4545, 86.3636, 74.0909, 95.9091] Check if ConvertToKilo([20, 25, 30, 35]) returns [9.0909, 11.3636,

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EE241 HW7 1. Using the concept of induced sources, formulate a 'volumetric' integral equation for the following dielectric scattering problem in terms of the unknown induced current density $\vec{J}_{ind}$, in the scatterer. $\vec{E}_i$ $(\epsilon_1, \mu_0)$ $(\epsilon_0, \mu_0)$ Note: It is not necessary to write out the explicit free space Green function in your answer. The scatter may be inhomogeneous, i.e. $\epsilon_1$ is a function of position. 2. Let us consider the problem 1 again, this time from the point of view of Huygen's principle. Suppose the total filed ($\vec{E}$, $\vec{H}$) on the boundary surface of the scatterer is known. Suppose also that we can readily find the fields radiated by sources in an infinite homogeneous medium. (a) Construct an equivalent problem so the fields on the outside can be readily determined. (Label fields/sources/media clearly) (b) If the scatterer is homogeneous, construct an equivalent problem for the inside

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Question 10 A company has just purchased a machine for 100,000 kroner. The machine must be depreciated linearly over 5 years. However, the company estimates its useful productive life to be only 4 years and the company may therefore write off the remaining book value in year 4. The machine will generate net cash flows before taxes (excluding effects of depreciation) of 40,000 kroner annually. The relevant tax rate is 30%. What are the expected cash flows after tax from the machine in year 4? A. 34,000 kroner B. 40,000 kroner C. 48,000 kroner D. 60,000 kroner E I choose not to answer.

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alexandra b.