Question 1
A confidence interval for a population mean, μ, has length 104.6. Find the margin of error.
◦ 104.6
◦ 10,941.16
◦ 209.2
◦ 52.3
Question 2
Find the confidence interval specified.
The mean score,

, on an aptitude test for a random sample of 3 students was 71. Assuming that

construct a 95.44% confidence interval for the mean score,

of all students taking the test.
◦ 59.7 to 82.3
◦ 56.0 to 86.0
◦ 62.3 to 79.7
◦ 45 to 97