I need help with this question, struggling with part d and want to see if what I have done for the other parts are correct.

Data for question is attached below the questions screenshot

OR use link for one drive excel file: https://1drv.ms/x/s!AmBKsnf4PUSthDxXcCZPk_X1XCFE?e=DqizQE

Data The dataset used for question 11 2 and 3 is a dataset on pollution in Beijing, China and is available on Moodle in both EViews workle format (.wfl} and in csv format (can be opened in Excel]. The variables are measured daily at 5PM from 2nd January1 2010' until 31st December, 2015 (there are some days missing} and are as follows: 0 pm2_5 (in micrograms per cubic metre): The PM2_5 concentration is a measure of air pollution. More precisely it is the concentration in the air of particles which are less than 2.5 micrometres in diameter. 0 dewpoint {in degrees lCelsius): The dew point is the temperature to which the air must be cooled to become saturated with water vapour. o humidity [in percentage points): A measure of the amount of water vapour in the air. 0 se: A dummy variable equal to 1 if the wind comes from the south east and 0 otherwise Page 1 of 11 o ne: A durum},r variable equal to 1 if the wind comes from the north east and 0 otherwise 0 nw: A dummy variable equal to 1 if the wind comes from the north west and D otherwise 0 windspeed [in km f h): Measures the strength of the wind. Note: When the three wind direction dummies equal 0 the wind is calm or variable