Code and Results for Chapter 4

• chap_4_prob_1.R (regression of Soma on AVE, LIN, and QUAD)
  
• chap_4_prob_3.R (linear regression on the transaction data)
  
• chap_4_prob_5.R (bootstrap confidence intervals of the fuel data)
  
• chap_4_prob_6.R (bootstrap confidence intervals of the windmill data)
  
• chap_4_prob_10.R (the longley data)