Question: Several factors influence the value obtained for the independent- measures t statistic. Some factors affect the numerator of the t statistic and others influence the size of the estimated standard error in the denominator. For each of the following, indicate whether the factor influences the numerator or denominator of the t statistic and determine whether the effect would be to increase the value of t (farther from zero) or decrease the value of t ( closer to zero). In each case, assume that all other factors remain constant.

1. Increase the difference between the two sample means.
2. Increase the size of the two samples.
3. Increase the size of the sample variances.

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