微笑键型还意在减少输入错误的发生率。

The smile keys are also intended to cut down on typos.

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非安全型人相信自己是完美的不承认他们的错误。

Unsafe people believe they are perfect instead of admitting their faults.

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Ⅱ型错误：当原假设错误的时候却没有拒绝原假设；

Power of test:rejecting the null hypothesis when it is false.

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Ⅱ型错误：当原假设错误的时候却没有拒绝原假设；

Power of test:rejecting the null hypothesis when it is false.

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