Foram encontradas 410 questões.
Indique se a proposição a seguir, relativa à teoria do consumo e do investimento, é verdadeira (V) ou falsa (F):
Item 0- Segundo a Teoria da Renda Permanente, o consumo corrente dos indivíduos é determinado por hábitos de consumo formados ao longo do tempo.
Provas
Questão presente nas seguintes provas
Considere os modelos lineares !$ y_t = \beta_1 X_t + U_{1t} !$ e !$ X_t = a_1 X_{t - 1} + a_2 y_{t-1} + U_{2t} !$, em que !$ U_{1t} !$ e !$ U_{2t} !$ possuem distribuição normal bivariada, variância !$ (u_{1t}) = sigma_{11}^2 !$ variância de !$ ( u_{2t} = \sigma_{22}^2 !$ e covariância !$ ( u_{1t}, u_{2t}) \sigma_{12}^2 !$. A avaliação da exogeneidade das variáveis depende dos seguintes resultados:
Item 3 - Se !$ a_2 = 0 !$, então Xt é fortemente exógena;
Provas
Questão presente nas seguintes provas
A integração financeira, comercial e geopolítica do Brasil no sistema internacional teve um impacto significativo sobre seu desempenho econômico ao longo da história. Sobre este tema pode dizer que:
Item 4 - Uma das formas de liberalização financeira não implementada na primeira metade da década de 1990 foi a participação de empresas brasileiras no mercado acionário dos EUA e Europa. A tentativa de se lançarem Recibos de Depósito tendo como lastro ações das empresas brasileiras foi frustrada pelas práticas contábeis pouco transparentes das mesmas.
Provas
Questão presente nas seguintes provas
Text 2
Elections in the Philippines
A family affair
MANILA
After a Supreme Court ruling, the presidential field takes shape, dominated by familiar names
Mar 12 2016 | From the print edition of The Economist
FOR decades political instability, a boom-and-bust economy and endemic corruption earned the Philippines the moniker of the "sick man of Asia". But during the six years that Benigno Aquino has been president the country's prospects have markedly improved. The economy has zipped along at an average growth rate of 6 a year, while foreign investment has more than tripled, with manufacturing, agribusiness and call centres all showing particular strength. Mr Aquino, whose family, huge landowners, is not short of a bob, has made a stand against corruption, and his approval ratings are high. But presidents may serve only one term, and an election for his successor takes place on May 9th, The question is whether Mr Aquino's successor can keep the Philippines on the upswing. Five presidential candidates want to have a go.
In America, a vice-president might present himself as the candidate for continuity. But in the Philippines voters elect the vice-president separately, and Mr Aquino has long been at odds with his number two Jejomar Binay, now a leading prospect to replace him. Until 2010 Mr Binay was mayor of Makati, the wealthy business and financial district of Manila. It is home to the country's stock exchange and the biggest banks and corporations; it also has the capital's least-awful traffic. Over the past year Mr Binay has faced a stream of corruption allegations from his time running Makati, including not declaring properties, city contracts awarded to family members, the existence of bogus charities and hundreds of ghost employees on the government payroll. But the allegations seem hardly to dent his standing. Ordinary Filipinos care more about their own poverty and about lower-level graft: sticky-fingered bureaucrats and policemen. In Mr Binay they see less a corrupt politician than one who gets things done: he makes much of having got Makati residents free health care and better schools. In a televised election debate last month Mr Binay slammed the government for under-spending on development and poverty alleviation (you could for a moment pretend that he was not part of the government he was railing against).
One of the candidates jostling with Mr Binay for pole position is Grace Poe, a 47-year-old senator with a thin record but a compelling back story. She is said to have been abandoned at a cathedral as a baby, and was adopted by a popular film star, Fernando Poe, himself a presidential candidate in 2004. With bags of charm, in 2013 she won the highest ever number of votes for a Senate candidate. She shone when handling a congressional hearing into a botched raid against terrorists last year in which 44 policemen died.
For some months Ms Poe's candidacy had been in doubt. In December the election commission disqualified her, claiming that, as a foundling, she could not prove that she was a natural-born Filipina and that, as a former American resident, she had not lived in the Philippines for ten years - both constitutional requirements. Ms Poe appealed, and on March 8th the Supreme Court ruled in her favour.
Though an independent, Ms Poe has backed Mr Aquino in the Senate. Now the president may be backing her behind the scenes, even though he has formally endorsed Manuel "Mar" Roxas, an old family ally. A former banker and interior minister, and the grandson of an earlier president, Mr Roxas has promised to carry on along Mr Aquino's "straight path" fighting corruption. But he struggles to connect with ordinary Filipinos. Ms Poe, all sparkle, stands a better chance of winning.
The other candidate with a chance is Rodrigo Duterte, or "Dirty Harry", the crime-busting mayor of Davao, the largest city on the southern island of Mindanao. Though Muslims in western Mindanao have long waged a separatist battle, Davao is among the country's safest cities, though the methods are dubious: vigilante execution squads that the mayor has endorsed. Mr Duterte speaks his mind. When a visit to Davao by Pope Francis last year caused traffic mayhem, Mr Duterte spluttered: "Pope, you son of a bitch, go home." Asked about his womanising, he admitted to having two girlfriends, but complained that "without Viagra, I have a difficult time". He appeals to people who want a strong leader. Others worry about how his rough edges will go down abroad.
In the end, the race may come down to Ms Poe's star power versus Mr Binay's support from his party and business, and his strong links with local governments. No candidate promises to upend Mr Aquino's programme, but then policy has never figured strongly in Philippine politics. For all of the country's robust economy and its growing middle class, politics is driven by personalities and dominated by a few powerful families. Whoever wins in May, that will not change .•
Understand from the text that:
Item 4 Traffic in Makati is the most awful in the capital.
Provas
Questão presente nas seguintes provas
Text 2
Elections in the Philippines
A family affair
MANILA
After a Supreme Court ruling, the presidential field takes shape, dominated by familiar names
Mar 12 2016 | From the print edition of The Economist
FOR decades political instability, a boom-and-bust economy and endemic corruption earned the Philippines the moniker of the "sick man of Asia". But during the six years that Benigno Aquino has been president the country's prospects have markedly improved. The economy has zipped along at an average growth rate of 6 a year, while foreign investment has more than tripled, with manufacturing, agribusiness and call centres all showing particular strength. Mr Aquino, whose family, huge landowners, is not short of a bob, has made a stand against corruption, and his approval ratings are high. But presidents may serve only one term, and an election for his successor takes place on May 9th, The question is whether Mr Aquino's successor can keep the Philippines on the upswing. Five presidential candidates want to have a go.
In America, a vice-president might present himself as the candidate for continuity. But in the Philippines voters elect the vice-president separately, and Mr Aquino has long been at odds with his number two Jejomar Binay, now a leading prospect to replace him. Until 2010 Mr Binay was mayor of Makati, the wealthy business and financial district of Manila. It is home to the country's stock exchange and the biggest banks and corporations; it also has the capital's least-awful traffic. Over the past year Mr Binay has faced a stream of corruption allegations from his time running Makati, including not declaring properties, city contracts awarded to family members, the existence of bogus charities and hundreds of ghost employees on the government payroll. But the allegations seem hardly to dent his standing. Ordinary Filipinos care more about their own poverty and about lower-level graft: sticky-fingered bureaucrats and policemen. In Mr Binay they see less a corrupt politician than one who gets things done: he makes much of having got Makati residents free health care and better schools. In a televised election debate last month Mr Binay slammed the government for under-spending on development and poverty alleviation (you could for a moment pretend that he was not part of the government he was railing against).
One of the candidates jostling with Mr Binay for pole position is Grace Poe, a 47-year-old senator with a thin record but a compelling back story. She is said to have been abandoned at a cathedral as a baby, and was adopted by a popular film star, Fernando Poe, himself a presidential candidate in 2004. With bags of charm, in 2013 she won the highest ever number of votes for a Senate candidate. She shone when handling a congressional hearing into a botched raid against terrorists last year in which 44 policemen died.
For some months Ms Poe's candidacy had been in doubt. In December the election commission disqualified her, claiming that, as a foundling, she could not prove that she was a natural-born Filipina and that, as a former American resident, she had not lived in the Philippines for ten years - both constitutional requirements. Ms Poe appealed, and on March 8th the Supreme Court ruled in her favour.
Though an independent, Ms Poe has backed Mr Aquino in the Senate. Now the president may be backing her behind the scenes, even though he has formally endorsed Manuel "Mar" Roxas, an old family ally. A former banker and interior minister, and the grandson of an earlier president, Mr Roxas has promised to carry on along Mr Aquino's "straight path" fighting corruption. But he struggles to connect with ordinary Filipinos. Ms Poe, all sparkle, stands a better chance of winning.
The other candidate with a chance is Rodrigo Duterte, or "Dirty Harry", the crime-busting mayor of Davao, the largest city on the southern island of Mindanao. Though Muslims in western Mindanao have long waged a separatist battle, Davao is among the country's safest cities, though the methods are dubious: vigilante execution squads that the mayor has endorsed. Mr Duterte speaks his mind. When a visit to Davao by Pope Francis last year caused traffic mayhem, Mr Duterte spluttered: "Pope, you son of a bitch, go home." Asked about his womanising, he admitted to having two girlfriends, but complained that "without Viagra, I have a difficult time". He appeals to people who want a strong leader. Others worry about how his rough edges will go down abroad.
In the end, the race may come down to Ms Poe's star power versus Mr Binay's support from his party and business, and his strong links with local governments. No candidate promises to upend Mr Aquino's programme, but then policy has never figured strongly in Philippine politics. For all of the country's robust economy and its growing middle class, politics is driven by personalities and dominated by a few powerful families. Whoever wins in May, that will not change .•
The text state that:
Item 1 Ordinary Filipinos care above all about Mr. Binay's awarding city contracts to family members;
Provas
Questão presente nas seguintes provas
Suponha que !$ Y_t !$ seja uma série temporal representada pelo seguinte processo:
!$ Y_t = \delta + Y_{t-1} + u_t !$, em que !$ u_t !$ é um ruído branco que satisfaz as seguintes condições:
!$ E(u_t) = 0,\,\,E(u_t^2) = \sigma_u^2 !$, !$ E(u_t u_s) = 0 !$, para !$ t \neq s !$.
Suponha também que Xt seja uma série temporal representada pelo seguinte processo:
!$ \triangle X_t = \alpha + \triangle X_{t-1} + e_t !$, em que et é um ruído branco que satisfaz as seguintes condições: !$ E(e_t) = 0,\,\,E(e_t^2) = \sigma_e^2 !$, !$ E(e_t e_s) = 0 !$ para !$ t \neq s !$,
É correto afirmar:
Item 1- A série Xt não é estacionária, pois possui ordem de integração 2;
Provas
Questão presente nas seguintes provas
Considere a distribuição de probabilidade conjunta das variáveis aleatórias X e Y, de acordo com a tabela abaixo:
| X | |||||
| 0 | 1 | 2 | 3 | ||
| Y | 1 | 1/4 | 1/8 | 1/8 | 1/4 |
| 2 | 0 | 1/8 | 1/8 | 0 | |
Pode afirmar que:
Item 0 - E(X)=3/2.
Provas
Questão presente nas seguintes provas
Uma matriz !$ M !$ ∈ R!$ n !$×!$ n !$ é chamada idempotente se !$ M^2 = M !$ . Uma matriz !$ N !$ ∈ R!$ n !$×!$ n !$ é chamada nilpotente se existe um número inteiro positivo k tal que !$ N^K = 0 !$ (matriz com todas as entradas nulas). Classifique a seguinte afirmação segundo a sua veracidade:
Item 1- Se !$ M !$ ∈ R!$ n !$×!$ n !$ é nilpotente, então existe um número inteiro r tal que !$ ( I - M)^{-1} = I + M + \cdots + M^r !$;
Provas
Questão presente nas seguintes provas
Analisar a veracidade da seguinte afirmação:
Item 2- Se !$ f(x) = { \large x + 1 \over x - 1} !$ definida em !$ R - \left \{ 1 \right \} !$,então !$ f^{-1} (x) = f(x) !$;
Provas
Questão presente nas seguintes provas
A chamada República Velha tem um período de consolidação e depois um de crise nos primeiros trinta anos do século XX. Neste intervalo de tempo pode afirmar que:
Item 4 - A proposta de um Programa Permanente de Defesa do Café do presidente Arthur Bernardes previa uma ampliação do papel do governo na retenção dos excessos de estoques nos portos de Santos e do Rio de Janeiro, já apontando para uma trajetória de crescimento da intervenção do Governo Federal na economia, que se ampliaria com o Governo Vargas nos anos 1930.
Provas
Questão presente nas seguintes provas
Cadernos
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