What is the process in R to complete these items

1. Use R to create the matrix r_xx.
2. Use R to create the matrix r_xy.
3. Use R to illustrate how b, the estimated standardized regression coefficients, can be calculated using matrix operations and the matrices from part (a) and (b). Recall, b=r_xx^-1r_yx.
4. Interpret the standardized regression coefficient for X1.
5. Transform the estimated standardized regression coefficients back to the ones for the fitted regression model by means of

b_k=(s_y/s_k) b_k^*

6.Use R to calculate the estimated coefficients for the regression model to verify your transformations from part (e).