Use these 30 different gas prices

2.70, 2.40, 2.58, 2.51, 2.54, 2.57, 2.50, 2.60, 2.65, 2.52, 2.30, 2.55, 2.30, 2.59, 2.54, 2.68, 2.78, 2.75, 2.71, 2.61, 2.70, 2.56, 2.58, 2.60, 2.62, 2.69, 2.55, 2.40, 2.34, 2.56

Part 1 - Estimate the mean price of regular gasoline in the Dayton area by taking a sample. What is the population you will be studying? Think carefully about how you are going to get a good sample to calculate a sample mean and collect the sample. For example, driving around your neighborhood is an example of a convenience sample and should not be done. Think of a more efficient way to collect gas prices that will also cover the whole Dayton area. Write a paragraph or two explaining how you collected your sample and why you think your sample is representative of Dayton gas prices. What is the sample mean? Construct a 95% confidence interval for the population mean price of gasoline in the Dayton area. Explain what this confidence interval tells you.

Part 2 - Compare your sample estimate to the current mean gas in the State of Ohio. Find the mean price of gasoline in the State of Ohio. using http://www.gasbuddy.com/USA. Set up a null and alternative hypothesis to see if your sample for Dayton is enough to prove that the population mean gasoline price in Dayton is different than the mean price in Ohio. Test the hypotheses. Show your work. Using a significance level of 0.05, what is your conclusion?

Part 3 - Compare your sample estimate to the current mean gas in the U.S. What is the mean price of gasoline in the U.S.? using http://www.gasbuddy.com/Charts. Set up a null and alternative hypothesis to see if your sample for Dayton is enough to prove that the population mean price in Dayton is different than the mean price in the U.S. Test the hypotheses. Show your work. Using a significance level of 0.05, what is your conclusion?

Suppose you are studying a population of an animal or plant. You wonder if this population is genetically distinct from neighboring populations (i.e., an ecotype). Briefly state several ways by which you could determine if your population is indeed a locally adapted ecotype. Then describe in some detail how this ecotype could have evolved to be distinct from neighboring populations. Include the concepts of mutation, natural selection, gene flow (migration), genetic drift and inbreeding.

For each of the following situations, state the key threats to auditor independence (from the five threats identified in SECTION 300 of APES 110).

Situation 1: An employee of an audit client who has influence over the preparation of the financial report, resigns and takes up a position with the audit firm.

Situation 2: A member of the assurance team resigns and takes up a position as a director with an audit client.

Situation 3: A member of the assurance team serves as the company secretary of an audit client.

Situation 4: An audit firm is concerned about losing a significant client.

Situation 5: An audit partner has a longstanding friendship with the CFO of the audit client.

1. State whether the following are true or false. Explain your statement.

1. A finding that small firms earn higher returns than large firms would provides evidence against the weak form of the efficient market theory. (5 marks)
2. Proponents of the EMH typically advocate a passive investment strategy. ( 5 marks)

(T / F) Please state True or false for the following questions and explain your reasons.

1. A transitory fiscal expansion with fixed exchange rates raises the stock of foreign exchange reserves of the central bank. True or false, and why?
2. Permanent increases in the money supply are more effective in raising the level of income under a flexible exchange rate system than under a fixed exchange rate system. True or false, and why?

Determine the ground electronic state of the BeC molecule. Explain your answer.

The answer requires the molecular orbital diagram as well as an electron configuration.

QUESTION 4

State whether each of the following are TRUE or FALSE, and explain your reasoning for the answer:

1. The binomial distribution is defined by its mean and standard deviation.

2. As the sample size increases, the standard error of the mean decreases.

3. If the population distribution is unknown, in most cases the sampling distribution of the mean can be approximated by the normal distribution if the samples contain at least 10 observations.

(b)       Suppose the following trend line and seasonal indices were obtained from four (4) years of sales data (in $ million) for a multinational grocery chain from 2012 to 2015.

Trend line:        y_t = 112 + 2.6t

Seasonal Effect:

1. Interpret fully the seasonal indices for the first and second quarters.

   (1 mark)

2. Forecast the sales value in the fourth quarter for the next year (2016).

(1 mark)

state and explain the three most popular theories of industrial relations.support your explanation with their practical assumptions

20marks

Sometimes a data dictionary is called as ‘the database designer’s database’. State and explain your opinion regarding this term and support your position using real-life scenarios.

Explain the role of pressure gradients in the cardiac cycle. Your answer should state the relationship between pressure gradients and blood flow. For each phase of the cardiac cycle, describe how pressure changes influence the direction of blood flow and the opening and closing of valves in the heart.