Acompany maintains three offices in a certain region, each staffed by two employees. information concerning yearly salaries (1000s of dollars) is as follows: office 1 1 2 2 3 3 employee 1 2 3 4 5 6
salary 29.7 33.6 30.2 33.6 25.8 29.7
(a) suppose two of these employees are randomly selected from among the six (without replacement). determine the sampling distribution of the sample mean salary xbar.
(b) suppose one of the three offices is randomly selected. let x1 and x2 denote the salaries of the two employees. determine the sampling distribution of xbar.
(c) how does e(xbar) from parts (a) and (b) compare to the population mean salary\(\mu\)

Look at this system of equations. -3x + 3y = 12 y = x + 4 the solution set of this system is best explained by which of these statements? a) the graphs of the equations are the same line because the equations have the same slope and the same y-intercept. the system has infinitely many solutions. b) the graphs of the equations are parallel lines because they have the same slope but different y-intercepts. the system has no solution. c) the graphs of the equations are lines that intersect at one point because the equations have the same slope but different y-intercepts. the system has exactly one solution. d) the graphs of the equations are lines that intersect at one point because the equations have the same slope and the same y-intercept. the system has exactly one solution.