Asubstance used in biological and medical research is shipped by air-freight to users in cartons of 1,000 ampules. the data below, involving 10 shipments, were collected on the number of times the carton was transferred from one aircraft to another over the shipment route (x) and the number of ampules found to be broken upon arrival (y). assume that first-order regression model is appropriate. i. 1 2 3 4 5 6 7 8 9 10xi. 1 0 2 0 3 1 0 1 2 0yi. 16 9 17 12 22 13 8 15 19 11a. obtain the estimated regression function. plot the estimated regression function and the data. does a linear regression function appear to give a good fit here? b. obtain a point estimate of the expected number of broken ampules when x = 1 transfer is made. c. estimate the increase in the expected number of ampules broken when there are 2 transfers as compared to 1 transfer. d. verify that your fitted regression line goes through the point (x bar, y bar)e. calcuate s. f. test the hypothesis that beta1=0, using alpha=0.05.

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b.my answer is b.

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the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

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answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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