3. How does the level of confidence affect the sample size? (Consider that other factors are constant) The higher the level of confidence, the smaller the sample size required. B. A. The lower the level of confidence, the larger the sample size required. The lower the level of confidence, the smaller the sample size required. D. The sample size remains constant in every level of confidence. C. Which of the following is the correct equation for sample size determination? A 4. A. n=x-Za/2 C. n= B. n X+E D. n-df+ 1 5. How does the margin of error and sample size affect one another? (Assume that the other factors are constant) A. A smaller sample size reduces the margin of error. B. A higher margin of error requires a larger sample. C. A lower margin of error requires a larger sample size. D. A small sample size results in a lower margin of error. A B DO DO BO