jhDo one of the following, as appropriate. (a) Find the critical value za/2 (b) Find the critical value ta/2 (c) state that neither the normal nor the t distribution applies. Confidence level 90%; n=19; Ơ is known; population appears to be very skewed. Find the critical value. A. Ta/2 = 1.330 B. Ta/2 = 1.734 C. Za/2 = 1.28 D. Za/2 = 1.645 E. Neither normal nor t distribution applies.

Question

jhDo one of the following, as appropriate. (a) Find the critical value za/2 (b) Find the critical value ta/2 (c) state that neither the normal nor the t distribution applies. Confidence level 90%; n=19; Ơ  is known; population appears to be very skewed.  Find the critical value. A.	Ta/2 = 1.330 B.	Ta/2 = 1.734 C.	Za/2 = 1.28 D.	Za/2 = 1.645 E.	Neither normal nor t distribution applies.