Provide an algorithm to identify the orders of an ARIMA(p,i,q) model

Expert Solution

Rahul Sunny answered 1 year ago

What are the model assumptions of the ARIMA (2,2,3) model?

Explain how you would identify an appropriate ARIMA structure for a time series model.

Let p and q be propositions. (i) Show (p →q) ≡ (p ∧ ¬q) →F (ii.)...

Let p and q be propositions. (i) Show (p →q) ≡ (p ∧ ¬q) →F (ii.) Why does this equivalency allow us to use the proof by contradiction technique?

(c) (¬p ∨ q) → (p ∧ q) and p (d) (p → q) ∨ p...

(c) (¬p ∨ q) → (p ∧ q) and p (d) (p → q) ∨ p and T I was wondering if I could get help proving these expressions are logically equivalent by applying laws of logic. Also these 2 last questions im having trouble with. Rewrite the negation of each of the following logical expressions so that all negations immediately precede predicates. (a) ¬∀x(¬P(x) → Q(x)) (b) ¬∃x(P(x) → ¬Q(x))

Prove that (((p v ~q) ⊕ p) v ~p) ⊕ (p v ~q) ⊕ (p ⊕...

Prove that (((p v ~q) ⊕ p) v ~p) ⊕ (p v ~q) ⊕ (p ⊕ q) is equivalent to p ^ q. Please show your work and name all the logical equivalence laws for each step. ( v = or, ~ = not, ⊕ = XOR) Thank you

fit an ARIMA model with the following data that correspond to the sugar price index proposed...

fit an ARIMA model with the following data that correspond to the sugar price index proposed by FAO. Data goes from January 2010 to December 2016 Use R or SAS Apply the stationary and unit root tests. Show the R or SAS code DATE valor ene-10 375.5 feb-10 360.8 mar-10 264.8 abr-10 233.4 may-10 215.7 jun-10 224.9 jul-10 247.4 ago-10 262.7 sep-10 318.1 oct-10 349.3 nov-10 373.4 dic-10 398.4 ene-11 420.2 feb-11 418.2 mar-11 372.3 abr-11 345.7 may-11 312.2 jun-11...

Show that if P;Q are projections such that R(P) = R(Q) and N(P) = N(Q), then...

Show that if P;Q are projections such that R(P) = R(Q) and N(P) = N(Q), then P = Q.

1. Show that the argument (a) p → q q → p therefore p...

1. Show that the argument (a) p → q q → p therefore p V q is invalid using the truth table. ( 6 marks ) (b) p → q P therefore p is invalid using the truth table. ( 6 marks ) (c) p → q q → r therefore p → r is invalid using the truth table. ( 8 marks )

1. If I can assume "not P" and derive "not Q", I have completed an indirect...

1. If I can assume "not P" and derive "not Q", I have completed an indirect proof of the statement "P → Q". T/F? Why? 2. If I want to prove "P → (x XOR NOT y)", it suffices to prove "P → (x AND y)". T/F? Why? 3. Suppose I assume "A" and derive "B". Then I start over, assume "not B", and derive a contradiction. Then I may conclude that A is a tautology. T/F? Why? 4. Suppose...

Please explain why and how the following are true. I. p ⇒(q∧r) is equivalent to (p...

Please explain why and how the following are true. I. p ⇒(q∧r) is equivalent to (p ⇒q)∧(p ⇒r) II. Let p(x) and p(x) be defined on an random/arbitrary universe of discourse. Why, in words, is (∀x)[p(x) ∧ q(x)] equivalent to[(∀x)p (x)] ∧ [(∀x)q(x)]

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