3. Which of the following statement about uniform distribution is true ? (A) It is a symmetric distribution. (B) The cumulated probability function is independent of the random variable. (C) Uniform distribution has zero mean . (D)All the uniform distributions have equal variance.

11. To test that per capita GDP of Taiwan in 2019 is no less than twenty thousand US dollars, if the significant level is 5%, which of the following statement is true? (A) Two tailors test is needed. (B) Right tailor is needed. (C) If the P-value is 0.03, then we cannot rejected null hypothesis. (D)For a given sample, the P-value is negatively related to the per capita GDP level that we want to test.

3. Which of the following statement about uniform distribution is true ?
(A) It is a symmetric distribution.
(B) The cumulated probability function is independent of the random variable.
(C) Uniform distribution has zero mean .
(D)All the uniform distributions have equal variance.

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