The information presented in Problem seven are analyzed using multiple linear regression analysis and the models are shown here. In the models, the data are coded as 1= new treatment and 0= standard treatment, and age greater than 65 is coded as 1= yes and 0= no.

y = 53.85 – 23.54 (Treatment)

y = 45.31 – 19.88 (Treatment) + 14.64 (Age > 65)

y = 45.51 – 20.21 (Treatment) + 14.29 (Age > 65)
+ 0.75 (Treatment X Age > 65)

Patients < 65: y = 45.51 – 20.21 (Treatment)

Patients 65 + : y = 59.80 – 19.47 (Treatment)

Does it appear that there is effect medication by age? Justify your response using the preceding models.