A confidence interval for a population mean has length 24. a) Determine the margin of error. b) If the sample mean is 64.2 , obtain the confidence interval. Confidence interval: Note: You can earn par
A) (60.2, 68.2)
B) (38.2, 90.2)
C) (52.2, 76.2)
D) (64.2, 88.2)
