Assume the following measures from population: mean =phi variance =eta total =phi proprtion of attribute Y= heta size =psi If we drawn a sample from this population (x_(1),dots,x_(50)) with attribute (v_(1),dots,v_(50));v_(1)=0 or 1 then: we estimate phi and phi respectively by: Select one: a. x^(') and ar{x} b. p_(y) and ar{x} c. ar{x} and x^(') d. ar{x} and p_(gamma ) e. p_(y) and x^(') Assume the following measures from population: mean = variance = total= proprtion of attribute Y= size = if we drawn a sample from this population(x,....5o with attribute (1,..5);1= 0 or 1 then: we estimate and respectively by: Select one: a. x' and x b. Pyandx x and Od. x and Py e. Pyandx'