Reference no: EM13242138
Question 1.
What is a ‘random sample'?
Question 2.
Explain the terms: simple random sampling , systematic sampling, stratified sampling, cluster sampling.
Question 3.
What is the ‘central limit theorem'(Chebyshev's Theorem)? Provide examples to make the meaning clear (using concepts such as sampling distribution and standard error of the Mean).
Question 4.
What is a time series? Explain the 4 main components of a time series.
Question 5.
Using relevant (well-documented) numerical examples, explain the steps involved in the following techniques, when applied to time-series:
3-year moving average method, 4-year moving average method, least squares method , forecasting using the least squares equation, exponential smoothing of data, calculation of seasonal indices.
Question 6.
What is an ‘index number'? How is such a measure useful?
Explain the following using relevant (well-documented) numerical examples:
The all-ordinaries index, the consumer price index, Laspeyre's index, Paasche's index.
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Find price and quantity that would maximize social welfare
: A. Find the price and quantity that maximizes the company's profit B. Find the price and quantity that would maximize social welfare C. Find out Dead weight loss
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What will be rate of return eventually earned by all firms
: There are 300 purely competetive farms in the local dairy market. Of the 300 dairy farms, 298 have a cost structure that generates profits of $24 for every $300 invested.
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What is the magnitude of the vector product
: Vector A ? has magnitude 10.0m m and vector B ? has magnitude 18.0m m . The scalar product A ? ?B ? is 90.0m 2. What is the magnitude of the vector product
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Calculate the resistance of the mercury
: In one form of plethysmograph (a device for measuring volume), a rubber capillary tube with an inside diameter of 1.22 mm is filled with mercury at 20°C, Calculate the resistance of the mercury
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What is a time series
: Explain the terms: simple random sampling , systematic sampling, stratified sampling, cluster sampling and what is a time series? Explain the 4 main components of a time series.
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Find the amplitude of the e and b fields
: the solar constant is the radiant flux density from the sun at the earth's surface and is about 0.135 W/cm^2 when the sun is directly overhead, find the amplitude of the E and B fields
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Two important policy goals of the government and the fed are
: Two important policy goals of the government and the Fed are to keep unemployment and inflation low, while at the same time making sure that GDP is increasing at an average of 3% per year. It is important to have the right mix of policies and that al..
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Find the magnetic flux through a flat surface
: A magnetic field of magnitude 0.38 T is directed vertically upward, Find the magnetic flux through a flat surface of area 22 cm2 if the surface is horizontal
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Discuss the impact on profitability in both situations
: Imagine you are a manager of a chemical company. An accident has occurred in which chemicals leaked into the ground water nearby, the community is unaware. Assess the costs involved in cleaning up the water immediately (confessing) versus hiding the ..
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