Out of 500 people sampled, 195 preferred Candidate A. Based on this, estimate what proportion of the voting population (ππ) prefers Candidate A.Use a 90% confidence level, and give your answers as decimals, to three places.    ______< π <_______

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Q: 6. A population of N = 15 scores has EX = 120. What is the population mean? %3D %3D

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.