You are given the following formulas for condence intervals: 15 i Zcrit M n XiZa% X: Which of the following best describes a 90% condence interval for the population proportion of people in Australia 3 : m't who own a mobile phone, if in a sample of 100 people, 80 stated they owned a mobile phone. 0 U.8::1.96 u.s(0.2)/10 =(0.7216,0.8784) O 0.8 1.984(0.8/'/100) : (0.6413, 0.9587) 0.8 :: 1.645'/0.8l0.2i?10 = (0.7342, 0.8658) 0 0.8 : 1.96(%) = (0.6432, 0.9568) 0 0.8 : 2.576i/0.3(0.2)?10 : (0.6970,0.9030)