What are the coordinates of the vertices of the solution region for the system x> =0 x< =6 y> =1/2x y< =2x+1 a) (0, 0), (1, 0), (3, 6), (13, 6) b) (0, 0), (0, 1), (3, 6), (13, 6) c) (0, 0), (1, 0), (6, 3), (6, 13) d) (0, 0), (6, 3), (6, 13), (-0.5, 0)

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables