For each of the following three questions, answer: (a) what is the IV? (b) what is the DV? (c) what are the scales of measure for each variable? (d) what are the null and alternative hypotheses (you can assume each is a two-tailed test)? An educational researcher randomly assigns fourth-grade students to receive a new after-school math program or to receive the standard after-school math program; she then measures how well they all do on a math test (where 0 indicates they got none of the questions correct).

3)    Which of the following questions can be answered based on a normal model?Explain. (You do not need to answer the questions, just determine if a normal model is appropriate.)
a)    According to the growth charts produced by the World Health Organization, one-month-old girls have a mean head circumference of 36.55cm and a standard deviation of 1.17 cm. In general, body measurements in a large population can be modeled by a normal curve.
In a study of health conditions in a county with a high poverty rate, researchers find that a random sample of 25 one-month-old girls have a mean head circumference of 36cm. Does this sample provide strong evidence that the mean head circumference for the population of one-month-old girls in this county is unusually small?
b)    According to the US Census Bureau 2014 Annual Social and Economic Supplement, the mean household income in the United States was $72,641. Previous studies suggest that the standard deviation is about $35,000. Income data is skewed strongly to the right.
We are interested in determining whether the mean household income is higher in our county. We randomly sample 25 households and determine that the mean income is $65,000. Does this sample provide strong evidence that the mean income is lower in our county?

A study was done to explore the number of chocolate bars consumed by 16-year-old girls in a month's time. The results are shown below. Number of Chocolate Bars Consumed 56 46 12 62 39 24 59 51 39 52 28 41 10 64 27 0 34 5 55 32 42 24 14 63 1 63 52 58 52 26 Use the data from the chocolate bar study to answer the following questions. Use SPSS for all calculations. Copy and paste the SPSS output into the word document, highlighting the correct answer. Additionally, type the correct answer into your word document next to the corresponding question. 1. Identify the level of measurement used in this study. 2. Using SPSS, run descriptive statistics on the data: a. Find the mean, median, and mode of the number of chocolate bars consumed by 16-year-old girls in a month. b. Find the variance and standard deviation of the number of chocolate bars consumed by 16-year-old girls in a month. 3. Create a frequency distribution table with six intervals/classes. 4. Create a histogram based on the Frequency table in problem 3.

Problem one

Suppose 34 households in my town were surveyed about the number of rolls of toilet paper they had on Saturday, April 4. The mean number was found to be 6.5, and the standard deviation was calculated to be 2.1. Find a 90% confidence interval for the mean number of rolls of toilet paper possessed by a household in my town.

Springfield Dental Care is the only dental care provider in the town of Springfield with about 5,000 residents. What are some of the reasons why this practice enjoys monopoly power in Springfield? If it is the only dental care provider in town, can it charge any price it wants for its services? Explain why or why not? (Use microeconomic terminology)

wk 4 cs

What is your opinion or thoughts on this question below? I need a 4500-word summary including an introduction, body, sub-title, conclusion and 2-3 references. please, thank you.

The new president of Toyota, Akio Toyoda (grandson of the founder), has said, “Everyone says Toyota is the best company in the world, but the consumer doesn’t care about the world. They care if we are the best in town.” What do you think he means by that? Answer: Toyoda understands his customers.

For ten years, Sammy owned a garage in Karibib. He then sold the garage to Fred for N$ 200 000. The contract provided that for a period of 5 years, Sammy would not be allowed to open a similar business in Karibib. Two years after Fred had purchased the garage, Sammy’s boredom gained the upper hand. He started to set up a new garage in the town of Karibib and advertised that he would shortly be back in business again.
May Sammy do this? Discuss the applicable legal concept and consequences thereof.

In the late 1990s, the U.S. government ran a surplus for the first time in decades. It instituted a buyback program, whereby the Treasury bought outstanding government bonds. How would this program affect the bond market price, yield, and quantity of bonds? How might it affect the liquidity of government bonds?

10. The free-rider dilemma refers to a situation in which an individual can consume a good or service without having to pay for it. True/False?

15. The Great Depression

Multiple Choice

• was the most severe recession since the Civil War, even though it lasted only 18 months.

• was a severe and prolonged reduction in output and employment for the United States during the 1930s.

• was a severe and prolonged reduction in output and employment for the United States during the 1980s just prior to the long economic expansion of the 1990s.

• is another name for the economic downturn that followed World War II.

22. Public goods

Multiple Choice

• include most goods and services that the market produces.

• lead to the pay-as-you-go problem.

• by definition, must be produced by the government.

• can be consumed by more than one person at the same time.

24. Which of the following individuals is frictionally unemployed?

Multiple Choice

• Jennifer has not been able to find a job because she lacks computer skills.

• Jose has decided to stop looking for work in order to return to school.

• James quit his teaching job in Virginia in order to relocate to Hawaii.

• Jai Lynn lost her job because her employer had to reduce staff during the recession.