Right-tailed test

we want to know if the population mean difference $\mu_1-\mu_2$ is significantly greater than 0 .

confidence interval method: If the upper limit of the confidence interval for the population mean difference $\mu_1-\mu_2$ (cell F19) is larger than 0 (the population mean when the null hypothesis is true), accept the null hypothesis. Otherwise, reject it (the appropriate conclusion appears in cell F23).