This table represents Lola's check register. Her checking account had a balance of $1,685.25 on January 1. Use the information on the check register to determine the balance of Lola's checking account after the transaction on February 2 Enter your answer in the box​

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%