You are planning to evaluate the mean of a single continuous variable from a study with a sample of n = 45 using the t statistic. What are the degrees of freedom for the sample? 44   43   46   45     With another study, where you also plan on evaluating a mean using the t statistic, you have a sample of n = 16 that has an SS of 120. What is the variance for the sample? 8   2.83   14,400   10.95     For a sample of n = 25 that has a sample variance of 400, what is the estimated standard error for the sample? 4   16   4.08   17

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