Random sample of 25 individuals is selected from a pop. with mean of 20….

and a treatment is administered to each individual in the sample. After treatment sample mean is found to be 22.2 with SS=384. What conclusion is reached (accept or reject Ho)?

3 years ago

Sum of squares =384

Variance = 384/24 =16

Standard Deviation =4

Standard error = 4/sqrt(25) = 4/5 = 0.8


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