20. If Qdx=505Px+2Py3Pz+2B+2N+ 2 points Note: Qdx is the quantity demanded for product " x ", Px is the price of product " x ", Py is the price of product " y ", z is the price of product " z ", B is the budget or the monthly income of the consumers, N is the number of consumers and e is the error term. Which of the following is correct? A. If the confidence interval for "Py" is from - 0.95 to 2.4, we should accept the null hypothesis that Py=0 B. If the confidence interval for "Py" contains zero, we should fail to reject the null hypothesis that Py=0 (meaning we should accept the Ho: Py =0 ). C. If the confidence interval for "Py" is 0.80 to 2.1, then we should accept the null hypothesis that Py=0 D. Only A and B are correct E. Only B and C are correct 20. If Qdx=505Px+2Py3Pz+2B+2N+ 2 points Note: Qdx is the quantity demanded for product " x ", Px is the price of product " x ", Py is the price of product " y ", z is the price of product " z ", B is the budget or the monthly income of the consumers, N is the number of consumers and e is the error term. Which of the following is correct? A. If the confidence interval for "Py" is from - 0.95 to 2.4, we should accept the null hypothesis that Py=0 B. If the confidence interval for "Py" contains zero, we should fail to reject the null hypothesis that Py=0 (meaning we should accept the Ho: Py =0 ). C. If the confidence interval for "Py" is 0.80 to 2.1, then we should accept the null hypothesis that Py=0 D. Only A and B are correct E. Only B and C are correct