For tests of a mean,if other factors are held constant,which statement is correct? A) The critical value of Student's t increases as n increases. B) A test statistic t_calc = 1.853 with n = 16 leads to rejection at α = .01 in a one-tailed test. C) It is harder to reject the null hypothesis in a two-tailed test rather than a one-tailed test. D) If we desire α = .10,then a p-value of .13 would lead us to reject the null hypothesis.

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In a two-tailed test, the rejection region is split between both tails, making it harder to reject the null hypothesis compared to a one-tailed test where the entire rejection region is in one tail.

For Tests of a Mean,if Other Factors Are Held Constant,which