question 1 (Lag operator expressions) (1 point) Rewrite the following expressions without using the lag operator. 1 6-2(1+2+ 4)4 Rewrite the following expressions in lag operator kem. Question 2 ( Autocorrelation functions of covariance stationary works) (1 point) While Interviewing at a top houston at bank, your interviewer h imposed by the but that you have taken a course on time series forecasting. She deckkes to test your knowledge of the antesonaringe structure of covariance stationary ures and lais five antonimarianne where is a positive constant. Which autocovariance fount tam(s) are consistent with covariance stationarity and which are not? Why? Question 3 ((Conditional and unconditional momma)) (1 point) As load of saks of the buding technology and innovation magazine publisher TECUTT. your bum h dependent on the in's meme. Howwe changes from mean to win, as subscription and cloutizing dick are cutered or removed From your experience in the publishing Iminimum you know that the sevenise in a saosin is a function of the mimlar of magazines sold and expected revenue in the previous soon and can be dearribed as - 30+1+ 5,71 + 5, with uncorrelated residual s ~ NO. 5010), where ya I. What is the capected revenue and variance for beat wawin conditional upon total sales of 1310 and expected rewage 8,000 the moon? (Hint: the Information at Thenhan Gong Homework 5 Econ :31:13 Spring Hill 1 What i unconditionally expected reeveme and variance if unconditionally expected 1 A rival poldeler offers you a contract blotical to your current contract (some law pay and bouza). Based upon a confidential interview, you know that the same ICY ence model with klentical coefficients is appropriate for you rival. The rival has sold an warage of 9 000 magazines with 18,000 expected rewrong in previous masons Init only 2.of0 the moon with capital morning GIU Will you accept the offer? Why of why not? (Hint: the unconditionally expected pevemet in relevant for the longer rum.)