Sooo like, what do yall wanna do?

What is the perimeter of square abcd? units units 28 units 37 units

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%

Landon wrote that 3−2.6=4. which statement about his answer is true?