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An expenditure is deductible for tax purposes if:
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Which one of the following is an advantage for a broad tax base?
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Table 12.4.1

The two columns of the table are titled Price in dollars per unit and Quantity demanded in units per hour. The rows display the data as follows:8; 07; 16; 25; 34; 43; 52; 61; 7

Refer to Table 12.4.1, which shows the demand schedule for the good produced by a monopoly. If this monopoly perfectly price discriminates and its marginal cost is constant at $3 per unit, how many units does the monopoly produce?
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A graph plots price (dollar per unit) versus Quantity (units per week). The horizontal axis ranges from 0 to 80 with an increment of 10 units. The vertical axis ranges from 0 to 100 with an increment of 10 units. The graph plots two slopes from top left to mid-right and bottom left respectively, a convex curve from mid-left to mid-top, and three closed points (20, 50), (20, 75), and (30, 62). The first slope falls through (0, 100) to (40, 0) is labeled M R, and the second slope falls through (0, 100) to (80, 0) is labeled D. The convex curve rises through (5, 40), (20, 50), (30, 62) to (45, 90) is labeled M C.

Figure 12.3.1

Refer to Figure 12.3.1, which shows the market for a good. What is the market price of the good?

If the producer is a perfectly competitive firm, the market price is ________ per unit, but if the producer is a single-price monopoly, the price is ________ per unit.
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What is a price cap and why might a price cap be a more effective way of regulating natural monopoly than rate of return?

A price cap is a ________ and it is more effective than rate of return regulation when ________.
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Which of the following statements about a natural monopoly is correct?

The long-run average cost curve of the firm ________ over the relevant range of outputs.
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Which of the following events occur when a perfectly competitive industry is taken over by a single-price monopoly?
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A graph plots price versus Quantity. The graph is as follows. In the graph, the points plotted on the y axis are I, F, H, G, and K. The graph plots two slopes from top left to mid-bottom and bottom-right respectively, a rising slope from mid-left to top right. There are four closed points labeled A, B, C, and D. The first slope falls from K to mid of x-axis labeled M R, and the second slope falls from K to the bottom right of x-axis labeled D. The rising slope passes through (0, I), C, and D are labeled M C.

Figure 12.3.3

Consider Figure 12.3.3, which shows the market outcome. If the market is a single-price monopoly, which area indicates consumer surplus?
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A graph plots price versus Quantity. In the graph, the points plotted on the y axis are I, F, H, G, and K. The graph two slopes from top left to mid-bottom and bottom-right respectively, a rising slope from mid-left to top right, and four closed points labeled A, B, C, and D. The first slope falls from K to mid of x-axis labeled M R, and the second slope falls from K to the bottom right of x-axis labeled D. The rising slope passes through (0, I), C, and D are labeled M C.

Figure 12.4.3

Refer to Figure 12.4.3, which shows a monopoly market. Which of the following areas indicates the consumer surplus from a perfect price-discriminating monopoly?
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Para responder às questões seguintes deverá usar a base de dados: ativ_fisica.sav

Um investigador pretende avaliar se a altura média destes indivíduos é igual à média populacional de 173 cm.

 Pergunta (A): Para responder à questão a investigar devemos escrever:

  1. Hipótese nula: a altura média dos indivíduos é diferente de 173 cm

  2. Hipótese nula: a altura média dos indivíduos é igual a  173 cm

  3. Hipótese alternativa: a altura média dos indivíduos é igual a 173 cm

  4. Hipótese alternativa: a altura média dos indivíduos é superior a 173 cm

Pergunta (B): O investigador deverá realizar:

  1. O teste-t para uma amostra

  2. O teste-t para amostras independentes

  3. O teste-t para amostras emparelhadas

  4. O teste ANOVA

Pergunta (C): Para garantir o cumprimento dos pressupostos do teste estatístico, o investigador teve necessidade de:

  1. Realizar o teste de Levene

  2. Realizar o teste de correlação de Pearson

  3. Realizar o teste de Shapiro-Wilk

  4. Nenhuma das alternativas anteriores está correta

Pergunta (D): Os resultados mostram que:

  1. A hipótese nula deve ser rejeitada porque 170,98 é menor do que 173 cm

  2. A hipótese nula não deve ser rejeitada porque 170,98 é menor do que 173 cm

  3. A hipótese alternativa deve ser rejeitada porque p-valor = 0,020

  4. A hipótese nula deve ser rejeitada porque p-valor = 0,020

Pergunta (E): Existe evidência amostral suficiente para se afirmar que:

  1. O teste não pode ser utilizado porque a variável altura não tem distribuição Normal

  2. A altura média dos indivíduos é superior a 173 cm

  3. A altura média dos indivíduos situa-se no intervalo 169,29 a 172,67 cm

  4. Nenhuma das afirmações anteriores está correta

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