Hellers manufacturers lawn mowers. Two different procedures have been proposed for mounting the engines on the frame of the lawnmower. Procedure 1 was developed by a longtime employee. Procedure 2 was developed by Heller's vice-president of engineering. A sample of 5 employees was timed using procedure 1, and the same five employees were timed using procedure 2. You want to test whether Procedure 1 takes less time than Procedure 2, on average. True or False

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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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rauschg

rauschg · hand

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f(x)=4

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