1997年4月10日中国营养学会常务理事会通过了（）。
A、《食品卫生条例》
B、《食品卫生法》
C、《膳食指南》
D、《中国居民膳食指南》
参考答案：D
A．v=
B．v=
C．v=
D．v=
Which of the following statements about hypothesis testing is most accurate（）
A. The probability of a Type I error is equal to the significance level of the test.
B. If you can disprove the null hypothesis, then you have proven the alternative hypothesis.
C. To test the claim that X is greater than zero, the null hypothesis would be Ho : X＞0.
