To test the effect of a physical-fitness course on one’s physical ability, the number of sit-ups that a person could do in 1 minute, both before and after the course, was recorded. Six randomly selected participants scored as shown below. Can we conclude that a significant amount of improvement took place? Use α = 0.01 and assume normality. (Please show all steps of classical approach.)

Before 29 22 25 29 26 24

After 30 26 25 35 33 36

A scientist claims that pneumonia causes weight loss in mice. The table shows the weights​ (in grams) of six mice before infection and two days after infection. At

alphaαequals=0.050.05​,

is there enough evidence to support the​ scientist's claim? Assume the samples are random and​ dependent, and the population is normally distributed. Complete parts​ (a) through​ (e) below.

Due to less business at many car repair workshops during lockdown, some of the workshops had to lay off a number of employees. People were mostly working from home and they were not using their cars. John was among the people that were retrenched. The industry consultants reckon it could take them a while before the business can peak.

John decided to set his own backyard business at home where he could serve the people in his neighbourhood. He then realised that for him to be able to make a viable business, he has to order genuine parts form recognised dealers for the types of cars that he will be working on. The suppliers have computerised their systems and some of the suppliers have closed warehouses where he cannot go and select the motor parts.

John must make his orders online from the car parts suppliers. Besides repairing cars, John also sells parts to other mechanics in the area who are not able to buy from the car parts dealers. John’s clients order the car parts and online. John’s company uses a delivery service to get the car parts to the respective clients who would have ordered online. John uses social media and word of mouth to advertise the businesses.

Suppliers of different car parts deliver the products to his home. He receives different types of delivery notes. Some suppliers send hard copies and some send the delivery notes to be signed online when the order arrives. There are clients from the neighbourhood that can order online and make a payment when they go to John’s house to collect their orders. Source: Makhurane, N. (2020)

Question 8

How does John protect the business systems from software threats?

1. Describe and briefly explain whether the following changes cause the short-run aggregate supply to

increase, decrease or neither:

a. The price level increases

b. Input prices decrease

c. Firms and workers expect the price level to fall.

d. The price level decreases

e. New policies increase the cost for businesses of meeting government regulations.

f. The number of workers in the labor force increases.

2. Describe and briefly explain whether the following changes cause the aggregate demand to increase,

decrease or neither:

a. The price level increases

b. Investment decreases

c. Imports increase and exports decrease

d. Consumer optimism improves

e. Government increases infrastructure spending

f. Stock market crashes.

3. Starting in early March of 2020, many factories, restaurants, offices and entertainment venues closed

their doors fearing the spread of Coronavirus. Using aggregate demand-aggregate supply model, predict

which curve this event mostly affects and what’s the impact on the US economy in the short-run?

4. From 2014 to 2018, dollar has been slowly falling against other major currencies.

a. Determine how the falling value of the dollar affects the US price level, real GDP and the

unemployment rate in both short-run and the long-run. You can assume that the economy was in the

long-run equilibrium before this change, and consider only the stated event. Place your answers in the

boxes below (using an up arrow, a down arrow, or a dash if the level is constant).

Short Run Long-Run

P Y u P Y u

b. Draw a diagram that supports your answers in part (a). Clearly label all the curves and equilibria as

well as show the direction of changes using arrows.

Briefly describe the history of antitrust policies in the United States. What are the advantages and disadvantages of highly concentrated industries? Does market power encourage or discourage innovation? Under what circumstances should the government use its antitrust authority to limit industry concentration and market power?

2.Define in detail the terms science and technology. How are these terms different, similar and what is the connection between them? Define in detail the terms invention and innovation. Are there any differences, similarities and connection between them? Why? As part of your description include an example of each type.

What material changes could advance the item leading?

(for example, to improvements in sustainability, accessibility, affordability, equity, performance, etc..)

Use materials property data and knowledge of materials selection strategies to support your proposed material innovation.

(Can you please not answer handwriting)

Explain why nations with Socialist run governments generally have lower levels of innovation and poor-quality living environments for citizens. Your answer should include the differences between Capitalism and Socialism outlined by the 3 questions that a Government Structure must answer in establishing an economy

CEMIG, Electric Utilities, Brazil

1. Environmental aspects
2. Social aspects
3. Human aspects ( Note - Human capital is different from Social capital )
4. Business Model and Innovation
5. leadership and governance
6. Leadership and Governance

pls find out the aspects of that particular company in the above mentioned fields

Briefly describe the history of antitrust policies in the United States. What are the advantages and disadvantages of highly concentrated industries? Does market power encourage or discourage innovation? Under what circumstances should the government use its antitrust authority to limit industry concentration and market power?