Do stain-polyurethane mixes protect wood as well as stain and polyurethane applied in separate coats? Five types of wood will be
used, with two boards of each type of wood. One board of each type of wood (randomly selected) will have the stain-polyurethane mix applied to it, and the other will have stain and polyurethane applied in separate coats. Each board will have water poured on it, and the amount of water retained will be measured. Which significance test is most appropriate
