Chapter 9

[Navatso]

There is an issue on chapter 9, in the following paragraph

OLS is saying that the treatment effect is BRL 27.60, that is, the push increases in-app purchase by 27.6 reais.

It should be
OLS is saying that the treatment effect is BRL 10.59, that is, the push increases in-app purchase by 10.159 reais.

The reason is that for the ones that the push is delivered, the push is assigned too. You cannot have push delivered without assigning it. so the total effect is sum of assigning and delivering.