A Manager, of a Plaster Board Mfg Firm believes, that Demand for Plaster Board is related to be the No of Construction Permits in a country. For this reason the Manager has collected the following information: Construction P ermits (X) Plaster Board Demand (Y) 15 6 9 18 20 12 20 25 24 18 25 26 15 18 Based on your Regression Forecasting Model, when the no of Construction Permits are 30, the Demand for the Plaster Board is:

a. 64

b. 31

c. 15

d. 28

e. 20

f. 23