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- Let X be a point randomly chosen on a stick of length 1 with a uniform distribution. Let Y be a point chosen between 0 and X on this stick with a uniform distribution. Y X 1 Find the covariance between X and Y. Please provide the solution step by step.Suppose that the random change in value of a financial asset is X over the first day and Y over the second. Suppose also that Var(X) =18 and Var(Y) = 26 In this case, the total change in the value over these two days is given by X +Y. Do you have enough information to compute Var(X +Y)? If so, compute this value. If not, explain what additional information you need to do so.Bb UTF Bb UTF Bb Sigi 2 Sta Bb E Rep 9 Nev Bb UT Rep Bb UTF Bb UTF Bb Mic * Win ent.blackboardcdn.com/5df8324563085/7628679?X-Blackboard-Expiration=1645045200000&X-Blackboard-Signature%3D BIU A A- | 三= Fill out the table below and calculate the x statistic and degrees of freedom. Blackjack Preserve Winthrop Woods Glencarin Garden Observed 54 48 24 d.f. = If you conduct this analysis in R, the output tells you the p-value = 0.002. What conclusion can you make? Explain how you reached this conclusion.
- We expect poorer countries (X=1) to grow faster (Y=1) than richer countries-the table below displays countries' relative incomes and growth rates. Poorer than average (X=1) Richer than average (X=0) Ten-year growth above Ten-year growth below average (Y=1) average (Y=0) 0.38 0.14 0.13 a) Find the covariance between the two variables. 0.35 b) Interpret in plain words the independence between X and Y. (up to 40 words)The index model has been estimated for stocks A and B with the following results: RA = 0.03 + 0.8RM + eA. RB = 0.01 + 0.9RM + eB. σM = 0.35; σ(eA) = 0.20; σ(eB) = 0.10. The covariance between the returns on stocks A and B is A) 0384. B) 0.0406. C) 0.0882. D) 0.0772. E) 0.4000. 2) Analysts may use regression analysis to estimate the index model for a stock. When doing so, the slope of the regression line is an estimate of A) the α of the asset. B) the β of the asset. C) the σ of the asset. D) the δ of the asset. Choose correct answer with justification.Calculate the conditional expectation of Y when X = 2. E(YX2)
- EXER 6.3 Find the covariance and the correlation coefficient between X and Y, if X and Y are jointly discrete random variables, with joint PMF given by: SHOW SOLUTIONS X\Y 0 1 6 0 28 6 1 28 2 0 333333 28 28 28 2120 28 0Corsider a train of rectangular pulses having as amplitude of 2 volts and widths which are either I us or 2 us with equal probability. The mean time between pulses is 5 µs. Find the PSD Gn(f) of the pulse train.ATISTICS. Period 3| Schoolo X E Statistics First Semester Exam x A Meet - vtinit-sxa A Meet - vinjf-sxa x F Kimberly Lozano-Fernandez -S x A docs.google.com/forms/d/e/1FAlpQLSdUYwVSceb7RoiMykn7VXp2T4pWLpEn4ArvnD7SAZLIWISA/viewform ESSD 5 Students MYDE I DI. 5 https://www servsa. O Confidentiality in th. $4U27.Y VVTiat was ie Tmean ConmISSIon earTIeur KOunu o ue nearest cent. O A) $3094.01 O B) $3867.52 O C) $3437.79 O D) $3088.01 7. The number of hours per day a high school student spends on homework has a Imean of 6 hours and a standard deviation of 1.25 hours. Yesterday she spent 3 hours on homework. How many standard deviations from the mean is that? * O A) 1.20 standard deviations below the mean O B) 1.20 standard deviations above the mean O C) 2.40 standard deviations below the mean O D) 2.40 standard deviations above the mean 8. In a data set with a range of 55.4 to 105.4 and 400 observations, there are 276 observations with values less than 86. Find the percentile for 86.* O A)…
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