H_{0}: μ_{d} = μ_{0} | The population mean of the differences (μ_{d}) equals the hypothesized mean of the differences (μ_{0}). |
H_{1}: μ_{d} ≠ μ_{0} | The population mean of the differences (μ_{d}) does not equal the hypothesized mean of the differences (μ_{0}). |
H_{1}: μ_{d} > μ_{0} | The population mean of the differences (μ_{d}) is greater than the hypothesized mean of the differences (μ_{0}). |
H_{1}: μ_{d} < μ_{0} | The population mean of the differences (μ_{d}) is less than the hypothesized mean of the differences (μ_{0}). |