Suppose That a Two-Tailed Test Procedure About the Population Mean $\mu$

Multiple Choice

Suppose that a two-tailed test procedure about the population mean $\mu$ is performed when the population is normal, but the sample size n is small. The null hypothesis will be rejected at significance level $\alpha$ if the value of the standardized test statistic t is such that

A) $t \geq t _ { \alpha , n - 1 }$
B) $t \leq - t _ { \alpha _ { i } , n- 1 }$
C) either $t \geq t _ { \alpha / 2 , n - 1 } \text { or } t \leq - t _ { \alpha / 2 , n - 1 }$
D) $- t _ { \alpha/ 2 , n - 1 } \leq t \leq t _ { \alpha/2, n - 1 }$
E) None of the above inequalities are correct.