Ziba, Inc. has provided the following information regarding their sales for January through December of 2009. (Part of the data file is shown below.) 
The results of the regression analysis relating these variables are shown below. 
a.The company is planning to increase their advertising by 5% per month for the months of January and February of 2010. What would be the advertising for January and February of 2010? Give your answers in dollars.
b.Use the regression model that is provided above and forecast sales for January and February of 2010, assuming the company increases their advertising by 5% per month for the months of January and February of 2010. Show your computations and write your answers in dollars below.
Definitions:
Psychomotor Retardation
A slowing of thought and a reduction of physical movements in an individual, which can be a feature of major depressive disorder.
Sexual Dysfunction
Conditions affecting any stage of the sexual response cycle, hindering the person or couple from achieving pleasure during sexual activities.
Dopamine Systems
Brain pathways that use dopamine as a neurotransmitter, playing crucial roles in movement, reward, and motivation.
Bipolar Disorder
A mental disorder characterized by significant mood swings that include emotional highs (mania or hypomania) and lows (depression).
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