How many times bigger is the 45,776 than 45.776

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%

Equation for the calculation double 2 and then add 5

Alex's monthly take home pay is $2,500. what is the maximum bad debt payment he can maintain without being in credit overload?