How did the Federal government’s attempt at reconstructing the South embitter Southerners and exacerbate racial tension?

In a recent article in the Daily Maverick, Tim Cohen wrote about the possible effects of a downgrade of the South African (SA) Government's USD-denominated debt by Moody's to sub-investment grade at the end of March, 2019. This downgrade would move SA government debt into "junk" status as the other two global rating agencies have already downgraded it to this level.

Clearly explain what do rating agencies such as Moody's do. Why is it important for the South African government to be rated by them?

Question 17 1 pts A researcher claims that the average cost for a new home in the South is greater than the average cost for a new home in the Midwest. 40 houses were randomly selected from each region with the following results South Midwest Sample Size 40 40 Sample Mean $261,500 $248,200 Population Standard Deviation $10,500 $12,000 Compute the p-value for test correct to 3 significant decimal places .0953 .181 .214 .0825 .100

Colin would like to know who can grow the most luscious beard of all. He recruits 3 groups of people: North Americans, Europeans, and South Americans. He measures all participants’ beard length after 10 years of not shaving, and finds the following results:

Calculate the F-value for this table

Pick an appropriate scale and graphically add these vectors, in order: A = 30 m/s at 30o North of East, B = 20 m/s South, C = 50 m/s at 70o West of South, and D = 15 m/s at 10o East of North. Using the same scale, add them in this order: C, B, D, A. Using the same scale, add them in this order: D, C, B, A. Does the order in which you add vectors affect the sum?

North Korea and South Korea before separation were known for ethnic and linguistic homogeneity. Economically, the two regions were also highly similar at the time of separation, with PPP GDP per person, in 1996 dollars, roughly equal to $700 in both regions. Yet, 50 years later, GDP per capita was 10 times higher in South Korea than in North Korea. What happened to the two countries for such a significant diversion in their economic trajectory? Please detail explanation.

Using a population proportion with a confidence interval. A Wholesale store looked into the state of South Carolina and North Carolina to see how many apple tablets were purchased out of a total amount of tablets within the past week. In South Carolina, a sample showed that out of 302 tablets 113 of them were Apple. In North Carolina, a sample showed that out of 340 tablets 195 of them were Apple. Develop and calculate a 95% confidence interval for both the population proportions.

Texas rancher wants to fence off his four-sided plot of flat land. He measures the first three sides, shown as A, B, and C in the figure below, where

A = 4.15 km

and

?_C = 23°.

He then correctly calculates the length in kilometers and orientation in degrees west of south of the fourth side D. What is his result in kilometers and degrees west of south?

A= 4.15km corresponding degrees is 7.5

B= 2.48 and corresponding degrees is 16

C= 3.02 km and degrees is 23

1. The Bureau of Economic Analysis in the U.S. Department of Commerce reported that the mean annual income for a resident of North Carolina is $ 18,688 with a Standard Deviation of 15000 (USA Today, August 24, 1995). A researcher for the state of South Carolina wants to test the following hypothesis: where μ is the mean annual income for a resident of South Carolina. The researcher gathers information from a sample of 625 residents of South Carolina and finds a sample mean of 17,076 (=17,076) with a sample standard deviation (s) equal to 15,500.

a. What is the appropriate conclusion pertaining to the hypothesis formulated above? Use a .01 level of significance.

b. Construct a 99% Confidence Interval for the value of the mean to mean of the South Carolina residents’ income(assuming you have no knowledge of the population mean and rely solely on the information from your sample).

c. How would your answer to part a change if you did not know the value of the population standard deviation and your sample size was only 25?.

d. What if the researcher was only concerned that the mean income reported by the Bureau might have intentionally exaggerated the mean income for the State? How would your answer to part a will change? Demonstrate.

In all these problems, show the area under the curve to graphically demonstrate your answers.