Birth certificates show that approximately 9% of all births in the United States are to teen mothers (ages 15 to 19), 24% to young-adult mothers (age 20 to 24), and the remaining 67% to adult mothers (age 25 to 44). An extensive survey of live births examined pregnancy type, defining an unintended pregnancy as one that was unwanted or mistimed by at least two years. The survey found that “only 23% of births to teen mothers are intended, and 77% are unintended. Among births to young-adult women age 20–24, 50% are intended, and at ages 25–44, 75% are intended.

Use your tree diagram and Bayes’s theorem to find the probability that a birth was to a teen mother if we know that the pregnancy was unintended.

The distribution of blood types in the United States according to the “ABO classification” is O:45%, A:40%, B:11%, and AB:4%. Blood is also classified according to Rh type, which can be negative or positive and is independent of the ABO type (the corresponding genes are located on different chromosomes). In the U.S. population, about 84% are Rh positive.

Sample two individuals at random and find the probability that:

(a) both are A negative

(b) one of them is O and Rh positive, while the other is not

(c) at least one of them is O positive

(d) one is Rh positive and the other is not AB

(e) they have the same ABO type

(f) they have the same ABO type and different Rh types

This data table lists the most common types of cancer in the United States, and includes information on the known or likely carcinogens, estimated cases per year, and estimated deaths per year in 2014.

Use the data table and your knowledge of cancer to identify which statements are true.

Select all that apply.

Specific factor model: Suppose that there are two sectors in the United States: the food sector, with land as the specific factor, the manufacturing sector, and capital as the specific element. Labor can flow between departments.

1. Suppose a good weather makes several states have a big harvest, which leads to an 8% drop in food prices. Please elaborate and analyze the changes of labor mobility, nominal income and actual income of labor force and factor owners (please show graph).

2. Suppose a typhoon destroys a lot of farmland in Jamaica, so that the land resources in Jamaica are temporarily reduced. And land is a very important specific factor in food production. Jamaica's food and manufactured goods production will be affected by this change.

Please analyze the changes of labor flow, nominal income and actual income of labor force and factor owners in detail and show graph（Assume price do not change）.

According to a recent study annual per capita consumption of milk in the United States is 21.5 gallons. Being from the Midwest, you believe milk consumption is higher there and wish to test your hypothesis. A sample of 14 individuals from the Midwestern town of Webster City was selected and then each person's milk consumption below.

Gallons of Milk

27.1

23.84

25.25

21

17.52

19.61

19.83

26.18

34.97

29.9

28.59

20.57

26.94

27.24

Develop a hypothesis test that can be used to determine whether the mean annual consumption in Webster City is higher than the national mean.

H₀: ? _________

H_a: ? _________

What is a point estimate of the difference between mean annual consumption in Webster City and the national mean? ____________(2 decimals)

At ? = 0.01, test for a significant difference by completing the following.

Calculate the value of the test statistic ________________(2 decimals).

The p-value is ____________ (4 decimals)

Reject the null hypothesis? No or Yes

What is your conclusion?

There is insufficient evidence to conclude that the population mean consumption of milk in Webster City is greater than the hypothesized mean.

or

Conclude the population mean consumption of milk in Webster City is greater than the hypothesized mean.

You have just been appointed to the post of Surgeon General of the United States. The President wants you to develop an advertising campaign called, “A healthy America by the year 2021” that encourages Americans to lead a healthier lifestyle.

What types of behaviors would you try to influence? Why? And how would you influence these behaviors?

Feel free to conduct an online search on the topic to collect materials for your answer. Provide those citations in your answer and articulate your argument with facts rather than emotion.

Answer the following questions related to Vegetarianism.

• In the United States, 32% of adults eat a vegetarian diet (Vegetarianism in America, n.d.). What does the term "vegetarian" mean?
• Do you think vegetarian diets are practical? That is, can someone easily be a vegetarian while living the typical American life of being rushed and busy?
• Vegetarian diets are associated with a lower risk of obesity and diabetes as well as other chronic conditions (Marsh, Zeuschner, & Saunders, 2012). Clearly a vegetarian diet can be a healthy one, but can a vegetarian diet lack nutrients? If so, which nutrients may be lacking? How could these nutrients be measured in the body to determine if someone is deficient in them? Are there vegetarian foods that provide these nutrients or would supplementation be necessary? Are there any interactions to be aware of with the supplements that a vegetarian may take?
• Do you think that a vegetarian diet would be costlier than a nonvegetarian diet?
• Look at the meals you ate in your 3-days diet record. Do any of your meals contain no meat? Choose one of your meals that contain meat and modify it to be vegetarian. Would you eat the modified meal?

The mean cost of domestic airfares in the United States rose to an all-time high of $400 per ticket. Airfares were based on the total ticket value, which consisted of the price charged by the airlines plus any additional taxes and fees. Assume domestic airfares are normally distributed with a standard deviation of $120. Use Table 1 in Appendix B.

a. What is the probability that a domestic airfare is $560 or more (to 4 decimals)?

b. What is the probability that a domestic airfare is $250 or less (to 4 decimals)?

c. What if the probability that a domestic airfare is between $310 and $490 (to 4 decimals)?

d. What is the cost for the 3% highest domestic airfares? (rounded to nearest dollar)

Suppose that in the United States last season’s hot holiday gift was the iPad (which is made primarily in China) while this season’s big gift is media content for the iPad (which is made in the U.S.). Determine whether there will be an increase, decrease, or no change for each of the following variables compared to last year.

     a. The supply of dollars would decrease  Correctand the demand for dollars would not change  Correct.

     b. The exchange rate between the U.S. dollar and the Chinese yuan would fall  Incorrect, causing the dollar to depreciate  Incorrect.

     c. Net exports for the U.S. would increase  Incorrect.

     d. Net capital outflows for the U.S. would fall  Incorrect.