Which is not a type of comparison for which you would antici

Which is not a type of comparison for which you would anticipate a two-sample test?

a Before Treatment versus After Treatment.

b Old Method versus New Method.

c Sample Mean versus Desired Mean.

d Experimental Group versus Control Group.

Solution

A. Here we have to collect one sample of individuals on whose two observations are taken one before the treatment and one after the treatment.So t is an one sample problem and test carried out by taking the differences Observation after treatment - Observation before the treatment .

B. Here we take two samples one from the record for Old method and one by hand for the New method.So it is a two sample problem.

C. Sample mean VS desired mean is necessarily an One sample problem.

D.It is a two sample problem.A test is carried out based on both the samples.