21. A public park is a public good because:

a. it is both excludable and rival good.

b. it is excludable but non rival

c. it is non-excludable but rival

d. it is non-excludable and non-rival.

22. If there are 5 firms in the market each with 10% of the market share, and another 10 firms that have the remaining market split between them equally, we can say that C4 or Concentration Ratio is 55%.

True or False

23. Regulated monopolies THAT operate on cost plus pricing, may make some positive economic profit.

True or False

24.

A monopoly faces a demand curve like:

if it finds that it's MR = MC occurs at Q = 3, what is the profit that the firm will make?

a. 60

b. 20

c. There is insufficient information

d. 6.66

You are interested in finding a 98% confidence interval for the average commute that non-residential students have to their college. The data below show the number of commute miles for 10 randomly selected non-residential college students. Round answers to 3 decimal places where possible.

a. To compute the confidence interval use a

distribution.

b. With 98% confidence the population mean commute for non-residential college students is between and miles.

c. If many groups of 10 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of commute miles and about percent will not contain the true population mean number of commute miles.

On 31 December 20x8, A Ltd paid $330,000 to acquire 90% of B Ltd when the fair value of B Ltd’s net assets was represented by share capital of $100,000 and retained profit of $100,000, except for an unrecognized brand-name that is deemed to have a fair value of $100,000. On this date, B Ltd’s share capital comprised 100,000 ordinary shares with a fair value of $3.30 per share.

Assume the group policy is to measure non-controlling interest at acquisition date based on its proportionate share of the fair value of identifiable net assets of subsidiaries acquired. In A Ltd’s 20x8 consolidated statement of financial position:

Non-controlling interest = $

Goodwill on consolidation = $

Assume the group policy is to measure non-controlling interest at acquisition date based on its fair value. In A Ltd’s 20x8 consolidated statement of financial position:

Non-controlling interest = $

Goodwill on consolidation = $

You are interested in finding a 95% confidence interval for the average commute that non-residential students have to their college. The data below show the number of commute miles for 12 randomly selected non-residential college students. Round answers to 3 decimal places where possible. 8 7 25 13 23 26 6 6 6 28 8 12 a. To compute the confidence interval use a distribution. b. With 95% confidence the population mean commute for non-residential college students is between and miles. c. If many groups of 12 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of commute miles and about percent will not contain the true population mean number of commute miles.

You are interested in finding a 90% confidence interval for the average commute that non-residential students have to their college. The data below show the number of commute miles for 11 randomly selected non-residential college students. Round answers to 3 decimal places where possible. 25 21 26 6 25 14 26 24 7 10 14 a. To compute the confidence interval use a distribution. b. With 90% confidence the population mean commute for non-residential college students is between and miles. c. If many groups of 11 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of commute miles and about percent will not contain the true population mean number of commute miles.

Two types of consumers (boaters and non-boaters) share a community on the seaside. Boating accidents can be reduced by lighthouse services. The boaters combined inverse demand for the lighthouse is P = 60 − 6Q, and the non-boaters combined inverse demand is P = 20 − 2Q. The cost of providing lighthouse services to the community is TC = Q².

a) Briefly explain why lighthouse services can be considered a public good.

b) Find the optimal provision of lighthouse services (use Samuelson condition).

c) Suppose that no government provides lighthouses. The boaters decide to produce lighthouse services on their own. How much would they produce?

d) Suppose the boaters produce the amount in your answer to part c), and then ask the non-boaters to contribute remainder to get the optimal amount you found in part b). What would the non-boaters say?

-With respect to chromosome content, which of the following cells will be most similar to a cell that is about to enter S phase?

A cell that has just completed meiosis II.

A cell just after mitosis.

A cell just before mitosis.

A cell that has just completed meiosis I.

-State two ways meiosis generates genetic variability.

-If you cross a parent with attached earlobes (recessive trait) with one that has free earlobes (dominant trait), what are ALL of the possible offspring phenotypic ratios?

3 free earlobes: 1 attached earlobes only

1 free: 0 attached or 1 free: 1 attached

1 free: 0 attached only

1 free: 3 attached only

-If you cross a heterozygous tongue roller with another heterozygous tongue roller, what are all of the possible offspring phenotypic ratios. Note: The ability to tongue roll is dominant to lacking the ability.

3 roller: 1 non-roller

1 roller: 0 non-roller

1 roller: 3 non-roller

1 roller: 0 non-roller or 1 free: 1 non-roller

In 2019, the University of Alabama (UA) homecoming event took place in Tuscaloosa from July 21 until July 24, 2019. People at the event included UA Alumni, their families, and friends who did not attend UA. Between August 3 and August 15, some of those who had been present at the event became ill with a type of pneumonia. No one attending the event had the disease before July 21, 2019. The number of UA alumni and non-Alumni who acquired the illness between August 3 and August 15, 2019, is shown in the table below.

Had pneumonia     
Yes   No     
Non-UA Alumni   50   750     
UA Alumni 300   900  

1) Compute the cumulative incidence of pneumonia among UA Alumni

Interpret the result

2) Compute the cumulative incidence of pneumonia among Non- Alumni

Interpret the result

3) Calculate the cumulative incidence ratio of pneumonia among UA Alumni compared to Non- Alumni

Interpret the result

4) Calculate the cumulative incidence difference of pneumonia among UA Alumni compared to Non- Alumni. (2pts)

Interpret the result

For this question, a block is a sequence of 20 characters, where each character is one of the 26 lowercase letters a-z. For example, these are blocks:

iwpiybhunrplsovrowyt
rpulxfsqrixjhrtjmcrr
fxfpwdhwgxtdaqtmxmlf

1. How many different blocks are there?
2. A block is squarefree if no character appears two times consecutively. The first and third example above are squarefree, but the second example is not because of the two consecutive occurrences of r. How many squarefree blocks are there?
3. A block is non-local if the number of characters between any two occurrences of the same character is at least 2. The first example above is non-local. The second example is not, because there are two occurrences of r with no characters between them. The third example is not because there are two occurrences of m with only one character between them. How many non-local blocks are there?
4. A block is k-non-local if the number of characters between any two occurrences of the same character is at least k. Write a formula for the number of k-non-local blocks that is valid for any k∈{0,…,20}.

Sanity check: The formula you get for 2.4 gives the answer to 2.2 when k=1 and gives the answer to 2.3 when k=2.