9. Which of the following statements is the most accurate about the relationship between a normal distribution and a student's t-distribution that have the same mean and standard deviation?
A. They have the same skewness and the same kurtosis.
B. The student's t-distribution has larger skewness and larger kurtosis.
C. The kurtosis of a student's t -distribution converges to that of the normal distribution as the number of degrees of freedom increases.
D. The normal distribution is a good approximation for the student's t-distribution when the number of degrees of freedom is small. |