What is b if 5(590-b)=100

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan

Is a positive integer raised to a negative power always positive

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%