# Mathematics

## Effectiveness of Criminal Justice

Respond to the following in a minimum of 175 words:In your opinion, how have statistics been used effectively by criminal justice professionals? Provide recommendations for more effective use and incorporation by criminal justice professionals.What are some examples of the effectiveness of criminal justice research in finding solutions to problems?

## Payday Loans

Payday LoansPayday loans are high-interest short-term loans, usually over a period of two weeks. One recurring political question is whether or not interest rates on such loans should be capped. Roughly speaking, those in favor of caps want to protect consumers from potentially harmful loans, while those against caps want to let the free market determine what the rate should be.1.) Watch the video and read the article below.Oliver, J. (2014). Predatory lending: Last week tonight with John Oliver. HBO.Retrieved from https://youtu.be/PDylgzybWAw(Note: the above video contains a high usage of profanity, please omit to view this video if you are offended by such language).Holland, J. (2016). Rapid City payday lender stops making loans due to new lower interest rates. Rapid City Journal.Retrieved from http://rapidcityjournal.com/news/local/rapid-city-payday-lender-stops-making-loans-due-to-new/article_0424e3da-5963-54f8-b5c3-60ba7797e743.html2.) Post a response of at least 150 words but not more than 350 words responding to the following.Do you think there should be interest rate caps on payday loans or not? Defend your answer.Determine the interest that would be charged on a two-week $300 payday loan if the interest rate is 520%, and the interest is compounded at the end of the two weeks. Explain how you came to your answer.Suppose a friend or family asked you how it could be possible that an annual interest rate is higher than 100%. Write out an explanation of what you might say to them.Be sure to give your answers in complete sentences.

## Coterminal Angles

Explain how to find coterminal angles. How does this process differ for angles given in radians verses angles given in degrees? For #15-18, find an angle between ?? and ???? coterminal to the given angle. Give your answer in radians. 16. &%!

## Statistics Nursing

mathnursingInstructionsIn this assignment, you will be required to use the Heart Rate Dataset to complete the following:Identify the variables in the datasetClassify each variable as qualitative or quantitative discrete or quantitative continuousSpecify the possible values of each variableGive a brief written description of what each variable tells us about the data provided.StepsOpen the Heart Rate Dataset in ExcelThere are 3 columns of data. Each column represents a different variable. What are the 3 variables represented in the dataset?Identify each of the 3 variables as qualitative, quantitative discrete, or quantitative continuousIdentify the possible values of each of the 3 variables in this dataset.Briefly describe what information each of the 3 variables tells us about the data

## Random Variable and Parameter

Variable Name in the Data SetVariable TypeDescriptionQualitative or QuantitativeVariable 1:SocioeconomicVariable 2:ExpenditureVariable 3:ExpenditureData Set Description and Method Used for Analysis:Briefly describe the data set, using information provided with data set and write up in Assignment #2. Also describe what method(s) (i.e., free web applets, Excel, TI Calculator) you used to analyze the data.1. Confidence Interval Analysis: For one expenditure variable, select and run the appropriate method for estimating a parameter, based on a statistic (i.e., confidence interval method) and complete the following table (Note: Format follows Kozak outline):Table 2: Confidence Interval Information and ResultsName of Variable:State the Random Variable and Parameter in Words:Confidence interval method including confidence level and rationale for using it:State and check the assumptions for confidence interval:Method Used to Analyze Data:Find the sample statistic and the confidence interval:Statistical Interpretation:

## Population Variance

Problem2A) Ho and Ha?B) Mean for Denim, Twill, Canvas?C) Population Variance for Denim, Twill, Canvas?D) SSTR?E) SSE?F) SST?G) Degrees of Freedom?H)TREATMENT D.FI)ERROR DEGREES OF FREEDOM?J) TEST STAT?K)CRITICAL VALUE?L) conclusion?Please answer any possible question that could be come about this problem and show your work please.Also for the problem 1 answer any possible question that could become about this problem??

## Afrobarometer Dataset

For this Assignment:Write a 1- to 2-page summary and include the following:Early in your Assignment, when you relate which dataset you analyzed, please include the mean of the following variables. If you are using the Afrobarometer Dataset, report the mean of Q1 (Age). If you are using the HS Long Survey Dataset, report the mean of X1SES.A description of what the each of the variables measure.A description of the unit of analysis.A description and explanation of the levels of measurement for each variable (i.e., nominal, ordinal, interval, ratio).Explain how you might conceive these variables to beused to answer a social change question. What might be the implications for social change?Support your summary using appropriate scholarly citatio

## Policy Memo

You have been working in a criminal justice agency for almost a year now, and one of your goals for your annual review is to propose new ideas or support new policies. With a month before your review, you are ready to work on this goal.Research a new or proposed criminal justice policy you support.Write a 700 to 1,050-word memo in support of a new policy in which you:Describe the policy.Explain why you support the implementation of the policy.Provide statistical data in support of the policy. Explain how the data supports the policy.Format your memo consistent with APA guidelines.

## Chi Square Test

Chi Square TestObserved Expected10 723 2039 4540 4727 323 5A real estate company is analyzing the selling prices of residential homes in a given community; 250 homes that have been sold in the past month are randomly selected and their selling prices recorded. The statistician working on the project has stated that in order to perform various statistical tests, the data must be distributed according to a normal distribution. In order to determine whether the selling prices of homes included in the random sample are normally distributed, the statistician divides the data into 6 classes of equal size and records the number of observations in each class. She then performs a chi-square goodness-of-fit test for normal distribution. The results are summarized in the table. 1. Complete the five step hypothesis Chi Square Goodness of fit test at level of significance 0.05. What is your decision? 2. What is your decision if you conducted the hypothesis test at level of significance 0.10? 3. At what significance level would your decision change?

## Regression Line

The slope of a regression line is the point where it crosses the X axis, while the intersect is the angle it forms with the X and Y axes.Question 8 options:TrueFalse

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