习题三3-7(1) 金球SAS处理结果:Sample Statistics for xN Mean Std. Dev. Std. Error-6 6.68 0.00 0.00Hypothesis TestNull hypothesis: Mean of x = 0Alternative: Mean of x = 0t Statistic Df Prob t-4228.344 5 .000190 % Confidence Interval for the MeanLower Limit: 6.67Upper Limit: 6.68由运行结果可知,