Convert (-5,-8) into equivalent polar coordinates

List the 10 possible samples (without replacement) of size 3 3 that can be obtained from the population of five officials.

Empty box + box + empty box fill in the box is equal to 30 how

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%