试题与答案

假设某股票1个月后的股价增长率服从均值为5%,标准差为0.03的正态分布,则1个月后

题型:单项选择题

题目:

假设某股票1个月后的股价增长率服从均值为5%,标准差为0.03的正态分布,则1个月后该股票的股价增长率落在()区间的概率约为68%。

A.(0,6%)

B.(2%,8%)

C.(2%,3%)

D.(2.2%,2.8%)

答案:

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