The level of calcium in the blood of healthy young adults follows a Normal distribution with a mean of LaTeX: \mu = 10μ = 10 milligrams per deciliter and a standard deviation of LaTeX: \sigma = 0.4.σ = 0.4. A clinic measures the blood calcium of 100 healthy pregnant young women at their first visit for prenatal care. The mean of these 100 measurements is LaTeX: \bar x= 9.8x ¯ = 9.8. Is this evidence that the mean calcium level in the population of healthy pregnant young women is less than 10?