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 = .05 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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C) It is generally harder to reject the null hypothesis in a two-tailed test compared to a one-tailed test because the critical region is split between the two tails of the distribution, requiring more extreme test statistics to reject the null hypothesis.

For Tests of a Mean, If Other Factors Are Held