How many moons fit inside the earth

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

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%