Victor malaba has a net income of $1,240per month. if he spends$150 on foid,$244 on a car payment,$300 on rent, and 50 on savings what percent of his net income can he spend on other things

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%