Add remark about handling missing values in survey.csv

Add answers in lab exercise 4.04 (moon cycles vs births)

Add links for bivariate qualitative labs

Delete Recordings/5_01_2sample_t.ipynb

Update print statement from 'Hello' to 'Goodbye'

Update greeting from 'Hello' to 'Goodbye'

Update 5.01-2sample-t.ipynb

Rename 5_01_2sample_t (1).ipynb to 5_01_2sample_t.ipynb

Add files via upload

Add files via upload

small fix to table with interpretation of Cohen's d

Update instructions in README

Slides: add goodness-of-fit test, standardized residuals

Slides: add content for chapters 4 and 5

Attempt to create Markdown-based slide decks with automatic publishing