Q3 hypothesis definition

Hi,

In question [Q3 (work overtime) we have](https://towardsdatascience.com/hypothesis-testing-with-python-step-by-step-hands-on-tutorial-with-practical-examples-e805975ea96e):

```
H₀: μ₁≤μ₂
H₁: μ₁>μ₂
```
It looks like a one sided hypothesis.
I think it should be:

```
H₀: μ₁ = μ₂
H₁: μ₁ different from μ₂
```

Actually in your jupyter notebook it is indeed correct. 