In an independent-measures study with n = 12 in each treatme…

In an independent-measures study with n = 12 in each treatment, the data produces M = 34 with SS = 44 for the first treatment and M = 42 with SS = 66 for the second treatment. If the data are used to construct a 95% confidence interval for the population mean difference, then what value will be at the center of the interval?

In an independent-measures study with n = 12 in each treatme…

In an independent-measures study with n = 12 in each treatment, the data produces M = 34 with SS = 44 for the first treatment and M = 42 with SS = 66 for the second treatment. If the data are used to construct a 95% confidence interval for the population mean difference, then what value will be at the center of the interval?