A population has a variance of 36. A random sample of 800 items from this population is selected. The sample mean is determined to be 525. At 95% confidence, the margin of error is Question Completion Status: QUESTION 18 0 a. 978 O b.5.18 0-2.495 Od. 416 A random sample of 1000 people was taken. Seven hundred of the people in the sample favored Candidate B. At 95% confidence, determine the margin of error for the proportion who favored Candidate B. QUESTION 19 0 8 014 Ob. 028 Oc 056 Od 725 QUESTION 20 From a population with a standard deviation of 25, a sample of 956 items is selected. The mean of the sample is determined to be 725. What is the 95% confidence interval of the population mean? O a. 723.42 10 726.58 O b. 731.21 to 737.68 OC. 744 56 10 748.62 O d. 778.41 to 779.63 QUESTION 21 a. 445 10 .486 In a survey of 2500 teenagers, 500 said they do not like coffee. For a 95% level of confidence, what is the confidence interval for the true proportion of people who do not like coffee? O b. 312 10 376 OC 184 10.216 Chick Save and Submit to save and submit. Click Save All Answers to save all answers