Use StatCrunch for this problem. Do not use values for z or t that you round, get from tables, etc. Only use StatCrunch. Out of 200 people sampled, 120 preferred Candidate A. Based on this, you will estimate what proportion of the voting population (p) prefers Candidate A. Use technology to find a 90% confidence level, and give your answers as decimals, to four places. Enter an integer or decimal number [more..] Check