The ponderal inder is a measure of overall size, similar to the body mass index. The ponderal index of full-term newborns follows a normal distribution with a mean of 2.4 kg/m3 (kilograms per cubic meter) and a standard deviation of 0.45 kg/m3 (note, once again, that the mean and standard deviation have the same unit of measurement). Is a newborn with a ponderal index of 1.75 above or below the 10th percentile? Show your reasoning.