QUESTION 1 A micro conomist wants to determine how corporate sales are influenced by capital and wage spending by companies She proceeds to randomly Select 20 Large corporations and record information in mid dollars A statistical analyst discovers that capital spending by corporations has a significant inverse relationship with wage spending What should the microeconomist who developed this multiple repression model be particularly concerned with?. a Randomness of enor terms Q.b Collinearty O c. Normaing of residuals. O d Masing observations QUESTION 2 The Cp statistic m used O a to determine if there is a problem of collincanty O'bad the vanances of the error terms are all the same in a regicasion model @ C to choose the best model O d to determine if there is an inregular component in a time series QUESTION 3 The Vinnce Inflationary Factor (VIEJ names the O a tunelation of the X variables wim me Y vanable Otb conclusion of the X vanable with each of ion Q & cominbution of each X vanabis with the Y varuble after an other X vanables me included in the mound d wardand devotion of the vege QUESTION 4 A regression diagnostic tool used to study the possible effects of collinearly in O. D Du Y udricept Old re stan ded mord the climateQUESTION 5 A real estate builder wishes to delermine how house sue (House) is infuonced by family income (income), family sue (See), and education of the head of household (School) House swo is measured in hundreds of square foot, income is measured in thousands of dollars, and education is in years, The builder randomly selected 50 families and me tho multiple repression This business Merature involving human capital shows that education influences an individual's annual income Combined, these may influence family size With this in mind, what should the real estate builder be particularly concerned with when analyzing the multiple regression model? O a Randomness of error forms O b Colinoanty @ a Normality of residuals Old Missing observations QUESTION 6 In musple regression, the procedure permis vanaties to onlor and leave the model at different stages of its development C a forward solucion b residual analysis O c backward alminalion O d shopwise repossion QUESTION 7