The mean unemployment rate in January of each year from 1995 to 2004 is x? = 5.06, with a standard deviation of sx= 1.2. The mean unemployment rate in June of each year for the same time frame is y? = 5.09, with a standard deviation of sy= 0.9. The correlation coefficient is r = 0.89.

Part A: Find the equation of the least-squares regression line for predicting June's unemployment rate from January's unemployment rate. Show your work. (3 points)

Part B: Use the regression line to predict the unemployment rate if January's rate is 4.3. Show your work. (3 points)

Part C: Find and interpret r-squared. (4 points)

ALSO ANSWER THIS ONE PLEASE!

The percentage of children ages 1 to 14 living in a single-parent home in 1985 compared to 1991 for 13 states was gathered.

Percent of Percent of State Children in Children in Single-Parent Single-Parent Homes 1985 Homes 1991 1 15.23 19.79 2 16.47 17.58 3 17.65 20.67 4 17.99 20.28 5 19.28 24.6 6 20.08 19.87 7 20.15 17.9 8 20.5 23.11 9 20.56 20.72 10 22.45 21.98 11 23.91 22.37 12 25.53 25.71 13 28.05 29.1