Valid CFA-Level-I Dumps shared by ExamDiscuss.com for Helping Passing CFA-Level-I Exam! ExamDiscuss.com now offer the newest CFA-Level-I exam dumps, the ExamDiscuss.com CFA-Level-I exam questions have been updated and answers have been corrected get the newest ExamDiscuss.com CFA-Level-I dumps with Test Engine here:
The mean of sample with a known population variance of 25 was estimated as 12.5. The sample size was 22 and the sample variance was 28. Which of the following represents the appropriate 95% confidence interval for the normally distributed population?
Correct Answer: A
Since the population variance is known and it is normally distributed, we will ignore the 1/2 sample variance. A 95% confidence 125+-196 (25/22) [1041 1459] 1/2 interval corresponds to a z-value of 1.96. Thus, CI is given by 12.5 +- 1.96 x (25/22) or [10.41, 14.59]