For a given alpha level, what happens to the critical value for a chi-square test if the number of categories is increased?
A) The critical value also increases.
B) The critical value decreases.
C) The critical value depends on the sample size, not the number of categories.
D) The critical value is determined entirely by the alpha level.
Question 2
Which of the following is a fundamental difference between the t statistic and a z-score?
A) The t statistic uses the sample mean in place of the population mean.
B) The t statistic uses the sample variance in place of the population variance.
C) The t statistic computes the standard error by dividing the standard deviation by n - 1 instead of dividing by n.
D) The t statistic is used for large samples only.
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