COPD prevalence in the United States

Please answer the following:

How do the economic systems of the United States, China, and Russia vary? How do political policies in the United States compare to China and Russia? (references would be much appreciated)

The United States and Cuba do not currently trade. Suppose that the price of similar quality cigars is higher in the United States than Cuba. If free trade ensues, what will happen to the price of cigars in both countries?

If the Korean steel industry subsidizes the steel that it sells the United States, the
a. United States should protect its domestic steel industry from this unfair competition.
b. harm done to U.S. steel producers from this unfair competition exceeds the gain to U.S. consumers of cheap Korean steel.
c. harm done to the U.S. steel producers is less than the benefit that accrues the U.S.
d. United states should subsidize the products it sells to Korea.

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1. A simple random sample of birth weights in the United States has a mean of 3433g. The standard deviation of all birth weights (for the population) is 495g.
   1. If this data came from a sample size of 75, construct a 95% confidence interval estimate of the mean birth weight in the United States.

2. If this data came from a sample size of 7,500, construct a 95% confidence interval estimate of the mean birth weight in the United States.

3. Which of the confidence levels above is wider? Why?

Suppose that the united states currently imports 1.0 million pairs of shoes from china at $20 each. With a 50% tariff, this made the consumer price in the United States $30.The price of shoes in Mexico is $25 suppose that as a result of free trade agreement with Mexico, the United states imports 1.2 million pairs of shoes from Mexico and none from china. What are the gains and losses to U.S consumers, U.S producers, and U.S government and the world as a whole?

Based on information from the World Bank, in 2016, GDP per capita was $57,467 in the United States and $59,977 in Iceland – very similar values (and high values compared to many countries). But, the annual rate of GDP growth averages 0.9% in the United States and 6.1% in Iceland.  

Would you predict the United States or Iceland to have a more rapid increase in the standard of living in the long run? _________________ Discuss what evidence/theory you are using to support this prediction.

During the period 1990–1998 there were 50 Atlantic hurricanes, of which 22 struck the United States. During the period 1999–2006 there were 75 hurricanes, of which 53 struck the United States.

• At α = 0.10, do the data support the hypothesis that the proportion of hurricanes that strike the United States is increasing? Follow and show the 7 steps for hypothesis testing.
• What assumption is required for this test? Show if the assumption is valid.  
• Verify with Minitab, by attaching or including the output.

(In java) Return a copy of the string with only its first character capitalized. You may find the Character.toUpperCase(char c) method helpful

NOTE: Each beginning letter of each word should be capitalized. For example, if the user were to input: "United States of America " --> output should be "United States of America" NOT "United states of america"

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(This code is given)

public class Class1 {

public static String capitalize(String str) {
    //add code here
}
}