This is just normal table salt, but that's also what makes the ocean salty.

这只是普通的食盐，但这也是海洋变咸的原因。

And if you have a calculator or a normal distribution table, you don't have to do this.

如果您有计算器或正态分布表，则不必这样做。

And then we could look it up in a Z-table or in a normal distribution table to say what's the probability of getting a value of this Z or greater.

然后我们可以在 Z 表或正态分布表中查找它，以确定获得此 Z 值或更大值的概率是多少。