Suppose the water supply in a community was a blend coming from a few different sources. Depending on the location of a residence, there would be different amounts of water from each of the different sources. One source was contaminated. From the time of contamination until the discovery of it, there were 20 live births in the community. 2 babies were born with abnormalities. Amount of water going to each of the residences where mothers resided during pregnancy was recorded. 2 birth defect babies came from residences in which the amount of contaminated water delivered was ranked highest and 4th highest.

1a.) perform a hypothesis test whether there is evidence of association between contamination and birth defects

1b.) explicitly state the null hypothesis, alternative hypothesis, your choice of test statistic, p-value, and conclusion

A Ferris wheel with radius 14.0 m is turning about a horizontal axis through its center, as shown in the figure below. The linear speed of a passenger on the rim is constant and equal to 6.30m/s.

A) What is the magnitude of the passenger's acceleration as she passes through the lowest point in her circular motion? Express your answer in meters per second squared to three significant figures.

B) What is the direction of the passenger's acceleration as she passes through the lowest point in her circular motion?

C)What is the magnitude of the passenger's acceleration as she passes through the highest point in her circular motion?

D) What is the direction of the passenger's acceleration as she passes through the highest point in her circular motion?

E) How much time does it take the Ferris wheel to make one revolution?

A retail firm is examining its inventory costing methods and considering the use of FIFO and Average Cost.

The following transactions occurred in April:

Beginning inventory was 20 units @ $100 each;

Purchased 8 units @ $150 each;

Sold 15 units @ $400 each.

Required:

(a)     Calculate the Cost of Sales for April for each of the two inventory costing methods being considered by the retail firm (GST effects can be ignored).                                                                                                                                                  

FIFO

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AVERAGE COST (round average cost per unit to the nearest whole dollar)

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______________________________________________________________________________

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(b)    Which inventory costing method will give the highest profit for April and why?                  

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(c)     If inventory prices were falling which inventory costing method would produce the highest profit and why?         

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(Total marks for Question 3 = 6 marks)

Semiconductors can become conductive if their temperature is raised sufficiently to populate
the (empty) conduction band from the highest filled levels in the valence band. The ratio of
the populations in the highest level of the conduction band to that of the lowest level in the
conduction band is nconduction/nvalance = gconduction/gvalance e–ΔE/kT where ΔE is the band gap, which is
0.661 eV for Ge and 5.5 eV for diamond. Assume for simplicity that the ratio of the
degeneracies is one and that the semiconductor becomes sufficiently conductive when
nconduction/nvalance = 1.0×10–6. At what temperatures will germanium and diamond become
sufficiently conductive? Given that the most stable form of carbon at normal pressures is
graphite and that graphite sublimates near 3700 K, could you heat diamond enough to make
it conductive and not sublimate it?

. During Year One, Company A and Company Z both sell 1,000 computers for $1,000 each in cash. Company A provides a one-year warranty to its customers for free. Company Z sells a one-year warranty to all of its customers for $50 each. Both companies expect 5 percent of the computers to break and cost $600 each to repair. In Year Two, both companies actually have 6 percent of these computers break. However, the required cost to fix each one was only $550.

a. In financial reporting for Year One, which company will report the highest amount of net

income? What will be the difference in the two reported amounts?

b. In financial reporting for Year Two, which company will report the highest amount of net

income? What will be the difference in the two reported amounts?

Suppose the returns on an asset are normally distributed. The historical average annual return for the asset was 6.7 percent and the standard deviation was 12.6 percent.
    
What range of returns would you expect to see 95 percent of the time? (Enter your answers for the range from lowest to highest. A negative answer should be indicated by a minus sign. Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.)

95% level % to %

What range would you expect to see 99 percent of the time? (Enter your answers for the range from lowest to highest. A negative answer should be indicated by a minus sign. Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.)

99% level % to %

Impaired Assets and Depreciation Methods" Please respond to the following:

From the e-Activity, summarize the authoritative guidance for asset impairments under IFRS. Give at least two (2) examples of events that could cause an asset to be tested for impairment, and recommend the best method to determine the fair value of an impaired asset. Explain the rationale for your recommendation.

Differentiate between the decreasing-charge depreciation methods and the special depreciation methods, and suggest the method that would result in the highest depreciation during the first year of operations. Imagine you are a manager at Delta Airlines and are giving a presentation to the Board of Directors concerning the best depreciation method to use for the purchase of twenty-five (25) new aircrafts. Explain to the Board the method that would result in the highest depreciation charge for the next five (5) years

Impaired Assets and Depreciation Methods" Please respond to the following:

From the e-Activity, summarize the authoritative guidance for asset impairments under IFRS. Give at least two (2) examples of events that could cause an asset to be tested for impairment, and recommend the best method to determine the fair value of an impaired asset. Explain the rationale for your recommendation.

Differentiate between the decreasing-charge depreciation methods and the special depreciation methods, and suggest the method that would result in the highest depreciation during the first year of operations. Imagine you are a manager at Delta Airlines and are giving a presentation to the Board of Directors concerning the best depreciation method to use for the purchase of twenty-five (25) new aircrafts. Explain to the Board the method that would result in the highest depreciation charge for the next five (5) years

Country A has a capital-labor ratio that is initially twice as big as that of country B, but neither is yet in a steady state. Both countries have the same production function, f(k) = 6k0.5. Country A has a 10% saving rate, 10% population growth rate, and 5% depreciation rate, while country B has a 20% saving rate, 10% population growth rate, and 20% depreciation rate.

(a) Calculate the steady-state capital-labor ratio for each country. Does the initial capital-labor ratio affect your results?

(b) Calculate output per worker and consumption per worker for each country.

(c) Which country has the highest output per worker? Explain.

Which country has the highest consumption per worker? Explain.

Suppose we would like to compare spending based on income group: Low, Middle, and High. The Y-variable is "spending (dollars)" and the x-variable is "Income Group (low/middle/high)."

Suppose the p-value for this ANOVA is 0.00002

What do we conclude?

Question 8 options:

The average spending is the about the same for all three income groups.

Income group is not correlated with spending.

The high income group had the highest average spending.

The average spending for one of the income groups is different from the average spending of another income group.

The average spending is different for each income group; there is a group with the highest average spending, there is a group in the middle, and there is a group with the lowest average spending (i.e. there are no two groups whose average spending are about the same).