Please help me solve A-C blanks below

Problem 15-21 (Algorithmic)

The Centers for disease Control and Prevention Office on Smoking and Health (OSH) is the lead federal agency responsible for comprehensive tobacco prevention and control. OSH was established in 1965 to reduce the death and disease caused by tobacco use and exposure to second-hand smoke. One of the many responsibilities of the OSH is to collect data on tobacco use. The following data show the percentage of adults in the United States who were users of tobacco from 2001 through 2011 (http://www.cdc.gov/tobacco/data_statistics/tables/trends/cig_smoking/index.htm).

Year	Percentage of Adults Who Smoke
2001	27.5
2002	27.2
2003	26.3
2004	25.5
2005	25.5
2006	25.0
2007	24.0
2008	24.8
2009	24.8
2010	22.8
2011	22.4

1. Choose the correct time series plot. ________________ What type of pattern exists in the data? __________
2. Use simple linear regression to find the parameters for the line that minimizes MSE for this time series. (t = 1 for 2001 year, t = 2 for 2002 year, ... , and t = 11 for 2011 year.) Round your answers to four decimal places. T_t = ______ + _______t
3. One of OSH's Healthy People 2020 Goals is to cut the percentage of adults in the united States who were users of tobacco to 12% or less by the year 2020. Does your regression model from part (b) suggest that the oSH is on target to meet this goal? _________________ If not, use your model from part (b) to estimate the year in which the OSH will achieve this goal. Year = ________

(i) Times Series Value (ii) Times Series Value Time period (t) Time period (t) (iii) Times Series Value (iv) Times Series Value Time period (t) Time period (t)