本文对比了单尾和双尾检验的差异，强调了在不同情况下选择哪种检验取决于问题的性质。以软饮料公司为例，顾客怀疑瓶装可乐少于600ml，形成的是单尾检验的假设；而质量控制团队希望确保瓶装可乐精确为600ml，因此采用双尾检验。此外，文章通过一个案例展示了如何进行双尾检验的假设测试，以确定样本平均值与600ml的显著差异。
- One tailed test
- Greater than type
- Less than type
- Two talied test
Not equal type:
Difference between One-Tailed and Two-tailed Tests
Test statistic value does not change for two-tailed or one-tailed test.
Only the critical values/p-value associated with the test statistic changes
Example : one tailed and two-tailed
Suppose a soft-drink manufacturer's most selling product is 600ml co
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