Questions on Statistics

Due to financial hardship, the Nyke shoe company feels they only need to make one size of shoes, regardless of gender or height. They have collected data on gender, shoe size, and height and have asked you to tell them if they can change their business model to include only one size of shoes – regardless of height or gender of the wearer. In no more 5-10 pages (including figures), explain your recommendations, using statistical evidence to support your findings. The data found are below:

The relationship between age and delinquency is evidence by an agreement between all three data sources, which show that crimes peak during mid to late adolescence. Rates for property crime peak in mid to

Answer the following questions in 100 to 200 words each. Provide citations for all the sources you use.

(1) A study of the number of cars sold looked at the number of cars sold at 500

Please address each question below with complete sentences and clear, specific explanation. The total word count of your writing should be between 750-1,250 words.

According to the website http://womenissues.about.com/cs/abortionstats/a/aaabortionstats.htm there are approximately 126,000 abortions conducted each day throughout the world. This website includes the abortion statistics of the world and breaks the data down to the demographics of the United States. It also discusses the decisions to have an abortion and the use of contraceptives in the United States. This was an informative website and included detailed statistics conducted by the Alan Guttmacher Institute. According to the website http://www.bls.gov/cps in 2000, gon average there were roughly 135 million employed and 6 million unemployed people in the labor force in the United States.h (p. 3) The websites definition of

Given the following information, would your decision be to reject or fail to reject the null hypothesis? Setting the level of significance at .05 for decision making, provide an explanation for your conclusion.

There have been 100,000 African Americans in prison since Brown vs Board of education. The article states that the trend will continue, 1 of every 3 African American males are apparently born today can expect to go to prison in their time, 1 in 6 Latino males, compared to 1 in every 17 White males. But for women, it is much lower, but the ethnicity does not change: 1 out of 18 African Americans, 1 out of 45 Hispanics, and finally 1 of every 111 White females, are expected to serve some time in prison. At any given day, 1 in every 13 African American males between 30 to 39 will incarcerated in a state or federal prison on any given day. This compares to the demographics of the group because in communities of color they are not affected only by incarceration but by high

NOTE: Please write your answers to each question in a different color font to make this easier for the Professor to grade.

Researchers routinely choose an ◊-level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower ◊-level (e.g., 0.01)? What are some situations in which you might accept a higher level (e.g., 0.1)?

Johnsons (2012) paper is very similar in design to this study in that it attempts to estimate the effect of changes in incarceration rates on changes in crime rates using state provided data [1]. Johnson investigates how responsive a change in the incarceration rate is correlated with a change in the general crime rate. He models the response as either elastic or inelastic. In this context if an increase in incarceration leads to a similar or larger reduction in crime rate than the defined “crime-prison elasticities” is large. If the change in crime rate is unresponsive to a change in incarceration rate, then this value is small. Johnson found that over time the marginal impact of incarcerating one additional prisoner has declined over the past several decades. He states that incarcerating a prisoner in the 1980s led to a larger reduction in the crime rate than incarcerating a prisoner in 2004. Thus, the marginal benefit of society maintaining such a high incarceration rate has decreased over

Directions: Please answer each of the following questions and provide examples from the text, if applicable. Each response should be at least two paragraphs in length and be written in complete sentences.

The information in the table below refers to the 2008 model year product line of BMW automobiles. Identify the Individuals, variables, and data corresponding to the variables in the table below. Determine whether each variable is qualitative, continuous, or, discrete. Please refer to problems #51 and #53 on page 13 for examples.

A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial, they wish to determine whether there is a difference between the effectiveness for women and for men. Using   = .05, what is the value the test statistic?

c.)Find a 95% confidence interval for the difference between the above obtained mean starting salaries.