Question: Please provide step by step solution with guided workings and explanation Inanswered Question 10 0 / 2 pts Use the R output provided below to

Please provide step by step solution with guided workings and explanation

Inanswered Question 10 0 / 2 pts Use the R output provided below to forecast the time series observation at time 121. > summary (Arima(paper, c(1, 1,1))) Series: paper ARIMA (1, 1, 1) Coefficients: ar1 ma1 0. 0250 0. 3324 s. e. 0. 1949 0. 1740 sigma"2 estimated as 1.071: log likelihood=-172.98 AIC=351.96 AICc=352. 17 BIC=360.3 > paper [115: 120] [1] 15.2463 17.0179 17.2929 16. 6366 15.3410 15.6453 > fitted (Arima (paper, c(1,1, 1) ) ) [115:120] [1] 14. 07445 15. 66689 17.51113 17.22723 16.42392 14.94875 16.0234 O 14.3925 orrect Answer O 15.8844 O 15.6453

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