In a single factor between subjects experimental design with two levels of the single factor, interval level of measurement, normally distributed variables, and homogenous variances, one most likely would test mean differences with ...

In a single factor matched groups experimental design with two levels of the single factor, interval level of measurement, normally distributed variables, and homogenous variances, one most likely would test mean differences with ...

In a single factor between subjects experimental design with two levels of the single factor and the dependent variable being COUNTS (frequencies), the appropriate data analysis would be