Q5. The LifeCycleSavings data frame consists of 50 countries from all regions of the world and includes the following 5 variables: (a) sr (numeric aggregate personal savings rate); (b) pop15 (numeric % population under 15 years); (c) pop75 (numeric % population over 75 years); (d) dpi (numeric real per-capita disposable income); and (e) ddpi (numeric % growth rate of dpi).(Recall that data frames such as LifeCycleSavings can be accessed simply by entering the file name at the R prompt > in the Console. For more information about this particular data frame, enter ?LifeCycleSavings at the >.)

Subset the LifeCycleSavings data so that only those observations for which dpi > 700 remain. (In other words, you will analyze a set of data that includes only those nations for which the disposable per-capita income (dpi) exceeds 700.) Once you have done this, regress the dependent variable sr (aggregate personal savings rate) on 4 independent variables: (a) pop15 (% population under 15); (b) pop75 (% population over 75 years); (c) dpi (disposable per-capita income); and (d) ddpi (% change in dpi). What is the adjusted r-square? _______________ (1 point)

(a)0.2151

(b)0.1993

(c)0.2543

(d)0.4493

(e)0.0949

(f)0.4077

(g)0.5778

(h)0.3541

(i)0.3001

(j)0.1171

Please solve using R. Thanks