An experiment was conducted to test the effect of a new drug on a viral infection. After the infection was induced in 100 mice, the mice were randomly split into two groups of 50. The first group, the control group, received no treatment for the infection, and the second group received the drug. After a 30-day period, the proportions of survivors, p̂₁ and p̂₂, in the two groups were found to be 0.4 and 0.60, respectively.

Find the test statistic and rejection region. (Round your answers to two decimal places. If the test is one-tailed, enter NONE for the unused region.

z = ?? (please do not use (p1-p2) / SE as it does not work. I have tried this multiple times)

z < = -1.65

z > = NONE

(b) Use a 95% confidence interval to estimate the actual difference (p₁ − p₂) in the survival rates for the treated versus the control groups. (Round your answers to two decimal places.)

Cushing Corporation is considering the purchase of a new grading machine to replace the existing one. The existing machine was purchased 4 years ago at an installed cost of $ 20 comma 300​; it was being depreciated under MACRS using a​ 5-year recovery period.​ (See table LOADING... for the applicable depreciation​ percentages.) The existing machine is expected to have a usable life of at least 5 more years. The new machine costs $ 35 comma 400 and requires $ 4 comma 500 in installation​ costs; it will be depreciated using a​ 5-year recovery period under MACRS. The existing machine can currently be sold for $ 25 comma 100 without incurring any removal or cleanup costs. The firm is subject to a 40 % tax rate. Calculate the initial investment associated with the proposed purchase of a new grading machine.

Rounded Depreciation Percentages by Recovery Year Using MACRS for
First Four Property Classes              
   Percentage by recovery year*          
Recovery year    3 years    5 years    7 years    10 years
1    33%   20%   14%   10%
2    45%   32%   25%   18%
3    15%   19%   18%   14%
4    7%   12%   12%   12%
5        12%   9%   9%
6        5%   9%   8%
7            9%   7%
8            4%   6%
9                6%
10                6%
11                4%
Totals   100%   100%   100%   100%
              

P11–13 Initial investment at various sale prices Ed Mann, sole owner of Edward Mann Consulting (EMC) is replacing one machine with another. The old machine was purchased 3 years ago for an installed cost of $10,000. The firm is depreciating the machine under MACRS, using a 5-year recovery period (see Table 4.2). The new machine costs $24,000 and requires $2,000 in installation costs. The firm is subject to a 40% tax rate. In each of the following cases, calculate the initial investment for the replacement.

Table 4.2

Rounded Depreciation Percentages by Recovery Year Using MACRS for First Four Property Classes

1. EMC sells the old machine for $11,000.
2. EMC sells the old machine for $7,000.
3. EMC sells the old machine for $2,900.
4. EMC sells the old machine for $1,500.

I don't have a finance calculator. I have the TI84 PLus, please show work . thanks.

1. There is ongoing debate among U.S. policymakers whether the role the government in the healthcare system should be expanded or reduced

Which of the following are the arguments put forward by those who would like to see a reduced government role? Check all that apply

a) Private insurers and providers should compete for consumers

b) Private insurance companies put profit ahead of people

c) The government is to offer people a public option in the healthcare

d) The government is to offer people a single payer system financed out of tax revenue

2. Both sides of the policy debate over healthcare often point to Canada, where the government runs the healthcare system, financed mostly by taxes.

Which of the following are the features of the Canadian centralized system considered by those in favor of a reduced government role? Check all that apply.

a) Lower costs

b) Excessively ration care

c) Reduced administrative inefficiency

d) Limited individual freedom

Wanting to form nickel(II) cyanide, Ni(CN)2, a chemist adds hydrocyanic acid, HCN, to a solution containing Ni2+ ions hoping to precipitate Ni(CN)2. The important equlibria for this process are given below:
HCN(aq) <--> H+(aq) + CN-(aq) Ka=4.0x10^(-10)
Ni(CN)2(s) <--> Ni2+(aq) +2CN-(aq) Ksp= 3.0x1-^(-23)

a) what is the equilibrium constant, Knet, for the following reaction which describes the precipitation reaction the chemist wants to perform?
Ni2+(aq) + 2HCN(aq) <--> 2H+(aq) + Ni(CN)2(s)
Knet = ?

b) Can the chemist readily form Nickel (II) Cyanide in this manner?
c) The chemist runs the reaction and allows the solution to come to equilibrium before diluting the solution by a factor of 10. Calculate Q upon dilu
d) Will he get more or less Ni(CN)2 by diluting the solution in this fashion?

countershaft in Prob. 3–72, p. 152, is part of a speed reducing compound gear train using
20° spur gears. A gear on the input shaft drives gear A. Gear B drives a gear on the output
shaft. The input shaft runs at 2400 rev/min. Each gear reduces the speed (and thus increases
the torque) by a 2 to 1 ratio. All gears are to be of the same material. Since gear B is the
smallest gear, transmitting the largest load, it will likely be critical, so a preliminary analysis
is to be performed on it. Use a diametral pitch of 2 teeth/in, a face-width of 4 times the circu-
lar pitch, a Grade 2 steel through-hardened to a Brinell hardness of 300, and a desired life of
15 kh with a 95 percent reliability.

1) if b is meshing with another gear with a diameter d=16 in what would be the required teeth on Fb?

2)Determine factors of safety for pitting

Output with Vars.java

A variable like userNum can store a value like an integer. Extend the given program as indicated.

1. Output the user's input. (2 pts)
2. Output the input squared and cubed. Hint: Compute squared as userNum * userNum. (2 pts)
3. Get a second user input into userNum2, and output the sum and product. (1 pt)

Note: This zyLab outputs a newline after each user-input prompt. For convenience in the examples below, the user's input value is shown on the next line, but such values don't actually appear as output when the program runs.

Enter integer:
4
You entered: 4
4 squared is 16 
And 4 cubed is 64!!
Enter another integer:
5
4 + 5 is 9
4 * 5 is 20

import java.util.Scanner;

public class OutputWithVars {
public static void main(String[] args) {
Scanner scnr = new Scanner(System.in);
int userNum;

System.out.println("Enter integer:");
userNum = scnr.nextInt();
  
  
}
}

The Burlington plant of Consumer Cosmetics is responsible for manufacturing all the lip gloss products that the company manufactures. In 2015 the plant had the following budgeted and actual costs.

Required

(a)      Head Office is complaining about cost over-runs. It says that all the manufacturing costs are higher than the budget in both $ and %. As manager of the plant, how would you respond to justify your position?

(b)     Ignoring price changes, etc., if you were told that the quantity to be manufactured in 2016 would be 1,000 kg, prepare the budget for 2016.

Risks and Controls

A. Tom works at a Fitness studio as a receptionist. His role is to verify that everyone who comes in is a member or pays a fee to come into the gym. He really needs to go to the toilet so he leaves the reception unattended and runs to the toilet.

B. Jill is the CFO of a company. She normally takes public transport and every day she works at home using her office laptop. On her way home she forgot her laptop in the bus.

C. Mike is a courteous employee of a financial company. The financial company has card readers at every door to make sure that only authorized personnel is able to access the building. Mike holds the door open for other people who are trying to get into the building.

Write down 5 examples of risks?
• How would you mitigate (limit) this risk?
• What type of control is this (preventive, detective or corrective)?

The client was a young IT professional who wanted to start-up a new company. The idea was to combine virtual reality developments with online education which was getting quite popular after coronavirus pandemic in 2020. Furthermore, the client was getting ready to launch virtual offices as well. Test runs have shown a strong interest from many companies as this would allow to save a lot of money on office spaces, utilities and supplies.

you have also asked the client which criteria is the most important for the new company: (a) organizational requirements and costs, (b) liability of the owners, (c) the continuity of the business, (d) the transferability of ownership, (e) management control and regulations, (f) the ability to raise capital or (g) income taxes.

Question . Specify the most suited legal form of business for each above mentioned criterion and explain the reason. Answer: a, b, c, d, e, f, and g