2. (12 Points) Run linearregressions to determine whether the differences observed between the treatment and control groups are statisticallysignificant ? Please note that the regression equation for this particular dataset is: y = a + bx,+ e, where i denotes the switchback period (the unit of observation), and x, is a variable equal to 0 for the control group and 1 for the treatment group. The outcome variable of interest is denoted y. The estimate of b is the difference in the average outcome between the treatment and control groups. Please refer to Question 1 to use the customerexperiencemetrics and efficiency metrics as y, and run the regressions. Please note that 7 regressions need to be conducted. Please reporta summary(table) of yourregression resultsand discuss your observations