Report on an Experiment analysis

A 2,500 words academic report and a R code.

The data contains 249 observations and 8 variables as described below:
personid person ID
tenure tenure at Ctrip (month)
expgroup whether person is in treatment group
men whether person is male
high_school high school education or below
promote_switch whether promoted or switched job function in 22 months
perform10 average overall performance z score before the experiment (by person)
perform11 average overall performance z score during the experiment (by person)
You should answer the following questions:
1. Is promotion affected by performance of the employee and how much, if so?
2. Is promotion affected by employee location during the experiment and how much, if so?
3. Does the effect of performance depend on location during the experiment?