Let x be a random variable representing percentage change in neighborhood population in the past few...

Let x be a random variable representing percentage change in neighborhood population in the past few years, and let y be a random variable representing crime rate (crimes per 1000 population). A random sample of six Denver neighborhoods gave the following information. x 30 3 11 17 7 6 y 177 33 132 127 69 53 Σx = 74; Σy = 591; Σx2 = 1,404; Σy2 = 73,541; Σxy = 9,821 (a) Find x, y, b, and the equation of the least-squares line. (Round your answers for x and y to two decimal places. Round your least-squares estimates to three decimal places.) x = y = b = ŷ = + x (b) Draw a scatter diagram for the data. Plot the least-squares line on your scatter diagram. WebAssign Plot WebAssign Plot WebAssign Plot WebAssign Plot (c) Find the sample correlation coefficient r and the coefficient of determination. (Round your answers to three decimal places.) r = r2 = What percentage of variation in y is explained by the least-squares model? (Round your answer to one decimal place.) % (d) For a neighborhood with x = 19% change in population in the past few years, predict the change in the crime rate (per 1000 residents). (Round your answer to one decimal place.) crimes per 1000 residents Need Help? Read It

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Let x be a random variable representing percentage change in neighborhood population in the past few...

Let x be a random variable representing percentage change in neighborhood population in the past few years, and let y be a random variable representing crime rate (crimes per 1000 population). A random sample of six Denver neighborhoods gave the following information. x 31 1 11 17 7 6 y 177 39 132 127 69 53 In this setting we have Σx = 73, Σy = 597, Σx2 = 1457, Σy2 = 73,973, and Σxy = 9938. What percentage of...

Let x be a random variable representing percentage change in neighborhood population in the past few...

Let x be a random variable representing percentage change in neighborhood population in the past few years, and let y be a random variable representing crime rate (crimes per 1000 population). A random sample of six Denver neighborhoods gave the following information. PLEASE HELP WITH QUESTIONS (F) - (I) x 28 1 11 17 7 6 y 170 38 132 127 69 53 In this setting we have Σx = 70, Σy = 589, Σx2 = 1280, Σy2 = 71,467,...

Let x be a random variable representing percentage change in neighborhood population in the past few...

Let x be a random variable representing percentage change in neighborhood population in the past few years, and let y be a random variable representing crime rate (crimes per 1000 population). A random sample of six Denver neighborhoods gave the following information. x 27 3 11 17 7 6 y 167 40 132 127 69 53 In this setting we have Σx = 71, Σy = 588, Σx2 = 1233, Σy2 = 70,612, and Σxy = 9041. (e) For a...

Let x be a random variable representing percentage change in neighborhood population in the past few...

Let x be a random variable representing percentage change in neighborhood population in the past few years, and let y be a random variable representing crime rate (crimes per 1000 population). A random sample of six Denver neighborhoods gave the following information. x 26 2 11 17 7 6 y 179 34 132 127 69 53 In this setting we have Σx = 69, Σy = 594, Σx2 = 1175, Σy2 = 74,320, and Σxy = 9134. (a) Find x,...

Let x be a random variable representing percentage change in neighborhood population in the past few...

Let x be a random variable representing percentage change in neighborhood population in the past few years, and let y be a random variable representing crime rate (crimes per 1000 population.) A random sample of six Denver neighborhoods gave the following information: x 29 2 11 17 7 6 y 173 35 132 127 69 53 ?x=72, ?y=589, ?x^2=1340, ?y^2=72,277,?xy=9499 a) draw a scatter diagram for the data b) find x bar, y bar, b and the equation of the...

Let x be a random variable representing percentage change in neighborhood population in the past few...

Let x be a random variable representing percentage change in neighborhood population in the past few years, and let y be a random variable representing crime rate (crimes per 1000 population). A random sample of six Denver neighborhoods gave the following information. x 25 4 11 17 7 6 y 172 33 132 127 69 53 In this setting we have Σx = 70, Σy = 586, Σx2 = 1136, Σy2 = 71,796, and Σxy = 8844. (a) Find x,...

Let X be the random variable representing the number of calls received in an hour by...

Let X be the random variable representing the number of calls received in an hour by a 911 emergency service. A probability distribution of X is given below. Value of X 0 1 2 3 4 Probability P(x) 0.32 ____ ____ 0.16 0.08 (a) Suppose the probability that X = 1 and the probability that X = 2 are the same. What are these probabilities? Incorrect: Your answer is incorrect. (b) What is the probability that at least one call...

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Let x be a random variable representing percentage change in neighborhood population in the past few...

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