For a sample of the past 30 monthly stock returns for McCreary,Inc.,the mean return is 4%and the sample standard deviation is 20%.Since the population variance is unknown,the standard error of the sample is estimated to be:
The related Hable values are percentile of t-distribution value with i degrees of freedom):
What is the 95%confidence interval for the mean monthly return?
A.[-3.453%,11.453%]
B.[-2.201%,10.201%]
C.[-2.194%,10.194%]
D.[-3.464%,11.464%]
Answer:D
声明丨本文由FRM考试网(frm.gaodun.cn)精编整理,未经许可不得随意转载或引用。