What to know
Identify the rule, formula, or decision criterion before reading the answer choices. CFA Level I distractors often use the right vocabulary with the wrong condition.
Confidence Intervals is part of CFA Level I Quantitative Methods. Quantitative Methods questions emphasize time value of money, probability, sampling, hypothesis testing, regression, and return statistics. Use this page to review the controlling ideas, then work through 1 question with answer explanations and common traps.
Review the worked explanations before moving into adaptive practice. The app version can mix this topic with due reviews and weak related concepts.
Practice this topicIdentify the rule, formula, or decision criterion before reading the answer choices. CFA Level I distractors often use the right vocabulary with the wrong condition.
Work each item under time pressure, then compare your reasoning with the step-by-step explanation and key takeaway.
Missed questions should become scheduled reviews when the error comes from a concept gap, formula setup, or answer-choice trap.
Confidence Intervals
A sample of 64 funds has mean active return 1.6% and sample standard deviation 4.8%. Using z=1.96, the 95% confidence interval for the population mean is closest to:
View sample