Finish The following queslions using R and R commander. I. The daTa on monThly renTs, in dollars, forindependenT random samples of newly compleTed aparTmenTs in The four U.S. regions are provided in The file A6_RenT_ANOVA_Q4.xst (The same daTa presenTed in Quesfion 4. of ParT A). ImporT The daTa info R commander. TesT aT 5% significance level wheTher a difference exisTs in mean renT of newly compleTed aparTmenTs in The four U.S. regions. Give all relevanf R oquuT and include all six componenfs of a hypoThesis TesT in your soluTions. Compare The answer wiTh The one you obTained by hand in QuesTion 4. of ParT A. NoTe: sTudenTs will find Lab Demo 33 (ANOVA) helpful. (8 marks) 2. The price and size of a random sample of nine cusTom homes are provided in The file A6_HomePrice_Regression_Q2.xlsx (The same daTa are presenTed in Quesfion 2. of ParT A). ImporT The dafa inTo R commander and complefe The following auesTions and Tasks. Give all relevanT R oquuT. NoTe: sTudenTs will find Lab Demo 32 (DescripTive Regression) helpful. (a)Could we use a sTraighT line To model The relaTionship beTween size and price of The cusfom homes? Use a proper graphical meThod To jusTify your answer. (3 marks) (b)How does The price of cusTom homes change when The size increases? Would The slope be posifive or negaTive? (2 marks) (c)Obfain The leasT-sauares regression eauaTion using R commander. Compare your answer To ThaT obTained by hand in QuesTion 5. parT (a) in ParT A. (2 marks) (d)CalculaTe The coefficienT of deTerminaTion, 1'2, and The correlaTion of coefficienT, 1", using R commander and compare These values wiTh The ones you calculafed by hand in Quesfion 5. parTs (d) and (e) in ParT A. (4 marks)