6. A big screen TV has a diagonal measurement of 60 inches. Which of the following could be the measures of the height and length of that TV? (Must show work for credit.) Ah 30 in, 1 - 60 in B. h 32 in, I = 50 in Ch= 20 in, I = 40 in Dh 15 in, 120 in may I get some help

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%