The graph below represents which system of inequalities? (2 points) Oys-2x+6
y
Oy<-2x+6
y 5x+ 2

None of the above
y 2 2x + 2

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%