The ability of unsaturated field soils to retain water is critical to the soil ecosystem. A team of soil scientists investigated the water retention properties of soil core samples from an uncropped field consisting of silt loam. At a pressure of 0.1 megapascal (MPa), the water content of the soil (measured in m³ of water/m³ of soil) was determined to be approximately normally distributed with a mean of 0.27 and a standard deviation of 0.04. For a soil core at a pressure of 0.1 MP, what is the probability its water content is less than 0.30 m³/m³? Define the random variable and solve the probability.