standard deviation is 4Quantity A: 出现在区间(60，64) 的概率Quantity B: 出现在区间(64，68) 的概

游客2025-02-23 1

问题 standard deviation is 4
Quantity A: 出现在区间(60，64) 的概率
Quantity B: 出现在区间(64，68) 的概率

选项 A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.

答案 A

解析这道题目不用将一般的正态分布转化为标准正态分布，如果大家能够记住正态分布曲线的钟形形状，就能够轻松地选择A。

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standard deviation is 4Quantity A: 出现在区间(60，64) 的概率Quantity B: 出现在区间(64，68) 的概

xy＜0QuantityA:|x+y|QuantityB:|x|+|y|A、QuantityAisgreater.B、QuantityB

(a+b)2=a2+b2,anda=1QuantityA:aQuantityB:bA、QuantityAisgreater.B、Quan

nisapositiveintegerQuantityA:(-1)n-1QuantityB:0A、QuantityAisgreater

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