Richmond City Transportation Department decided to study the effect of snow on the number of complaints from the passengers.

In an attempt to assess the impact of the weather, City's Planning Department ran a regression application between the number of snow centimetres and the number of complaints, per day, to the Customer Care hotline with the following data.

Snow level in centimetres Number of complaints, per day

0.4 25

0.7 32

1.2 47

1.7 60

2.1 75

2.6 96

3.2 130

a)What is the regression equation you obtain?

b)State and interpret the R squared

c)Calculate the estimation for 0.7 cm of snow.Explain the residual for this observation