Note: Please answer this question only by typing your answers in the typing space available for this question. A website has trained a linear regression model to predict the amount of minutes that a user will spend on the site. The formula they have obtained is [4 marks] i=0.8d+0.6m+0.6y+0.3a+2.5 where t^ is the predicted time in minutes, and d,m,y, and a are indicator variables (namely, they take only the values 0 or 1 ) defined as follows: d is a variable that indicates if the user is on desktop. m is a variable that indicates if the user is on mobile device. y is a variable that indicates if the user is young (under 21 years old). a is a variable that indicates if the user is an adult ( 21 years old or older). Example: If a user is 30 years old and on desktop, then d=1,m=0,y=0, and a=1. If a 19-year-old user looks at the website from their phone, what is the expected time they will spend on the site