Let us continue with analyses of data from the study of M Daviglus et al (N Engl J Med 1997) on the relationship of fish consumption with death from coronary heart disease (CHD) among 1,822 male employees of the Western Electric Company Hawthorne Works in Chicago who were followed for 30 years. we consider the 242 men who reported consumption of ≥ 35 g/day of fish at baseline. Among these 242 men, 46 died of CHD during follow-up.
a. Provide a point estimate and an appropriate 95% confidence interval for the 30- year risk (probability) of CHD death among employees who typically consume at least 35 g/day of fish. Additionally provide a brief interpretation of your confidence interval.
b. Perform a one-sample test to determine whether the 30-year risk (probability) of CHD death in those who consumed at least 35 g/day of fish is significantly different from 0.25. Make sure to specify your null and alternative hypotheses and give a brief conclusion.
In: Math
come up with the scenario where housing could give us a WTP to avoid pollution from a nearby coal power plant and a scenario where we could undercover the necessary payment people would be willing to accept to tolerate the coal plant nearby.
In: Economics
In: Physics
Zane just graduated from college and us thrilled to explore his new life and all the excitement that comes with it. Just now, Zane received communication from a company to whom he owes $100,000 in student loans. The information in the communication states that Zane agreed on an annual interest rate of 7.99% that is compounded annually. Also, Zane is allowed to make one fixed payment at the end of each year for the next 10 years.
Zane is shocked by this information because it has been 4 years since he signed that agreement but he is not dishearted because he received another email from a company he interviewed with that he has been hired at an above average starting salary. Zane is a planner and he pulls up his old financial calculator to figure out how he is going to be debt free very soon.
Although the loan asks for payment at the end of each year, Zane believes that he should not wait all year long and instead should save every month. His expected salary after taxes is $5,000 per month. He has a savings account at a credit union that is expected to pay 3% interest on savings that is compounded monthly.
In order to save the annual payment, Zane has decided to deposit an equal amount of money from his paycheck to his savings account. What should be the monthly amount for Zane to have accumulated the annual payment? Show steps on how you got answer.
In: Finance
Eric received an email from Amazon Customer Service that said "Thank you for contacting us." But Eric did not contact them. Instead, an attacker had contacted them and pretended to be Eric. When Amazon Customer Service asked the attacker to identify himself all he had to do was give Eric’s name, email address, and mailing address—which the attacker got from Whois, which contains Eric’s registration information for his website. However, Eric knew to protect his actual mailing address so the registration information on Whois was actually a hotel close to Eric’s house. Because the information matched what was on file, Customer Service told the attacker the mailing address of Eric’s order, which was his real home address. Eric contacted Amazon, found out these details, and told them not to release any of his information to anyone who contacted Customer Service, to which Amazon agreed. Fast forward two months. Eric again received another "Thank you for contacting us" email. After contacting Amazon again, he found that this time the attacker had tried to get the last four digits of Eric’s credit card number on file through more social engineering tricks.
Fortunately, this time Amazon did not surrender that specific piece of information (although they had ignored his previous instruction not to give out any information). Had they provided the credit card number the attacker would have had enough information to pass the "I’m-the-real- Eric" test on almost any of Eric’s online accounts (using his name, email address, mailing address, and last four digits of his credit card) and trick their Customer Service into resetting Eric’s password. This would then allow the attacker to get into Eric’s online accounts and purchase a virtually unlimited number of items charged to Eric’s credit card. What went wrong? Should the first Amazon Customer Service representative have been reprimanded? What policies should Amazon have had in place to prevent this? What technologies should there be in place to prevent this? As a customer, what should you do to protect your online accounts?
Write a one-page paper on your analysis.
In: Operations Management
Data from the Framingham Study allow us to compare the distributions of initial serum cholesterol levels for two populations of males: those who go on to develop coronary heart disease and those who do not. The mean serum cholesterol level of the population of men who do not develop heart disease is µ = 206mg/10ml and the standard deviation is σ = 36mg/100ml. Suppose, however, that you do not know the true population mean; instead, you hypothesize that µ is equal to 230mg/100ml. This is the mean initial serum cholesterol level of men who eventually develop the disease. Since it is believed that the mean serum cholesterol level for the men who do not develop heart disease cannot be higher than the mean level for men who do, a one-sided test conducted at the α = 0.05 level of significance is appropriate.
a. How could you increase the power?
b. You wish to test the null hypothesis H0: µ ≥ 230mg/100ml against the alternative HA: µ < 230mg/100ml at the alpha = 0.05 level of significance. If the true population mean is as low as 206mg/100ml, you want to risk only a 5% chance of failing to reject H0. How large a sample would be required?
c. How would the sample size change if you were willing to risk a 10% chance of failing to reject a false null hypothesis?
In: Math
What does the Letter from a Birmingham Jail tell us about MLK and his view of unjust laws? How do you fight against unjust laws, and who should be held responsible? Do you agree with King and his methods?
In: Psychology
Question One:
The following data extracted from the trial balance of ABC Company on Dec 31st 2020:
|
Financial Statement item |
Amount |
Financial Statement Item |
Amount |
|
Buildings |
1,200,000 |
Motor vehicles – Accumulated depreciations |
180,000 |
|
Cash |
320,000 |
Depreciation expenses |
630,000 |
|
Sales revenues |
16,000,000 |
Purchases returns and allowance |
96,000 |
|
Sales commission |
120,000 |
Interest expenses |
1,150,000 |
|
Travel expense - sale |
75,000 |
Gains on sale of lands |
455,000 |
|
Equipment |
840,000 |
Notes payable |
2,890,000 |
|
Account payable |
420,000 |
Equipment – accumulated depreciation |
440,000 |
|
Goodwill |
3,000,000 |
Impairment loss – equipment |
260,000 |
|
Purchases |
6,400,000 |
Accumulated unrealized gains of non-trading securities |
265,000 |
|
Trading securities |
1,460,000 |
Sales returns and allowance |
215,000 |
|
Account receivables |
810,000 |
Customs and taxes – purchases |
1,045,000 |
|
License |
475,000 |
Utilities expenses |
167,500 |
|
Audit fees |
90,000 |
Customer list |
300,000 |
|
Freight –in |
85,000 |
Loss due to an earthquake damage |
618,000 |
|
Repair expenses |
76,000 |
Interest revenues |
148,000 |
|
Purchases discount |
128,000 |
loss on operation of the disposed division |
195,000 |
|
Beginning inventory |
1,487,500 |
Legal and accounting expenses |
47,000 |
|
Share capital – ordinary |
4,250,000 |
Buildings – Accumulated depreciation |
280,000 |
|
Advertising expenses |
630,000 |
Unearned revenues |
215,000 |
|
Supplies |
112,000 |
Furniture and computers |
350,000 |
|
Prepaid insurance |
120,000 |
Leasing liabilities |
3,400,000 |
|
Notes receivables |
1,650,000 |
Share premium – preference |
675,000 |
|
Bonds payables |
5,000,000 |
Share premium – treasury |
180,000 |
|
Wages payable |
62,000 |
Retained earnings |
?? |
|
Dividends revenues |
243,000 |
Accumulated revaluation surplus |
220,000 |
|
Sales discount |
145,000 |
Non-trading securities |
5,575,000 |
|
Trade payables |
88,000 |
Gains on currency exchange |
140,000 |
|
Lands |
3,050,000 |
Legal reserve |
312,500 |
|
Delivery expenses |
313,000 |
Share premium – ordinary |
2,000,000 |
|
Rent expenses |
94,000 |
Patent |
960,000 |
|
Insurance expense |
40,000 |
Treasury shares (400,000 * 3) |
1,200,000 |
|
Motor vehicles |
1,550,000 |
Held to maturity investment |
3,417,000 |
|
Revaluation surplus |
150,000 |
Salaries and wages expenses |
1,180,000 |
|
Share capital – preference |
2,000,000 |
Investment in preference shares |
2,100,000 |
|
Franchise |
1,450,000 |
Allowance for doubtful accounts |
60,000 |
|
Mortgage payable |
900,000 |
Loss on disposal of Salmya Branch’ assets |
324,000 |
|
Dividends declared |
700,000 |
Loss on sales of trading securities |
81,500 |
|
Land for speculations |
650,000 |
Buildings to lease out |
1,850,000 |
Additional Information that was not included in the trial balance:
Required:
In: Accounting
Periodic System— Using Knowledge of Financial Statement Relations to Compute Missing Accounts
The following information relates to Payleast Shoes Company. Assuming the company uses the periodic inventory system, solve for the missing amounts a through m for years 2020 through 2022.
| 2020 | 2021 | 2022 | ||||
|---|---|---|---|---|---|---|
| Net sales | $90,000 | $110,000 | $130,000 | |||
| Beginning inventory | 12,000 | e. | j. | |||
| Purchases (gross) | 70,000 | 82,500 | 99,000 | |||
| Purchase returns and allowances | 6,000 | 5,000 | 8,800 | |||
| Purchase discounts | 4,000 | 2,500 | 1,900 | |||
| Freight-in | 3,000 | f. | 10,000 | |||
| Cost of goods available for sale | a. | 93,500 | k. | |||
| Ending inventory | 15,000 | g. | 26,000 | |||
| Cost of sales | b. | 75,500 | l. | |||
| Gross profit | c. | h. | 39,700 | |||
| Gross profit percentage | d. | i. | m. |
In: Accounting
Assume that Sample Company purchased factory equipment on January 1, 2017, for $90,000. The equipment has an estimated life of five years and an estimated residual value of $9,000. Sample's accountant is considering whether to use the straight-line or the units-of-production method to depreciate the asset. Because the company is beginning a new production process, the equipment will be used to produce 10,000 units in 2017, but production subsequent to 2017 will increase by 10,000 units each year. Required: 1. Calculate the depreciation expense, accumulated depreciation, and book value of the equipment under both methods for each of the five years of its life. Enter all amounts as positive values.
Straight-line method:
| Annual | Accumulated | Book | |
| Year | Depreciation | Depreciation | Value |
| 2017 | |||
| 2018 | |||
| 2019 | |||
| 2020 | |||
| 2021 | |||
Units-of-production method:
| Annual | Accumulated | Book | |
| Year | Depreciation | Depreciation | Value |
| 2017 | |||
| 2018 | |||
| 2019 | |||
| 2020 | |||
| 2021 | |||
In: Accounting