# For insurance companies to remain profitable they need to collect more in yearly premiums than they# spend on the medical care of their beneficiaries.## Appropriate medical expenses are difficult to estimate because the mostly costly conditions are rare# and seemingly random. Still, some conditions are more prevalent for certain segments of the population.# For instance, lung cancer is more likely among smokers; heart-disease is more likely among the obese.## Use patient data named insurance to estimate the average medical care expense for such # population segments. The name of the data is "insurance" and it contains data on 1338 beneficiares currently# enrolled in the insturance plan.# It contains information on total medical expenses charged to the plan (charges).############################################################################### Write the codes and run them to get the correct answers# You will NOT need to imput the answers into Canvas,# **Therefore make sure you include detailed answers in the R script as a comment**# A couple questions only require the code, they are labeled as such# However, any required answers that are missing or lack detail will result in a loss of points# Any code that is missing will also result in a loss of points##############################################################################RUN ALL CODES INCLUDED, they will reset your environment.remove(list = ls())options(digits = 3, scipen = 9999)install.packages("openintro")library(openintro)# READ, VIEW, & ATTACH DATA BELOW:insurance = read.csv("https://docs.google.com/spreadsheets/d/e/2PACX-1vTN2h0cH_ROVaxcBrnYurp5D5hvh_Bt7TxCLiAyHKZ-8bKfkYEWZblDjrb1LtR1tBLl3_ij7b0Igrtk/pub?gid=1261987830&single=true&output=csv", stringsAsFactors = T, header=TRUE)View(insurance)attach(insurance)# 1. Get the names of the variables. (only the code is required)# 2. Examine correlation among the explanatory variables - age, bmi, children - and charges, using cor() # What two variables have the strongest relationship?# 3. Using age, children, bmi, and sex, estimate a linear regression model for charges. Name it model1. # (only the code is required, questions are below)# 4. How much are additional (average) charges for each year that age increases? # 5. How much are additional charges for each additional child?# 6. How much are additional charges for male than female ?# 7. What does the *** and * mean in the summary near the p-value? # 8. Is the adjusted R2 strong in this model? What does the adjusted R2 tell you?# 9. Predict charges for the individuals where age is 30, sex is male, bmi is 33.77, children is 0. What are the charges based on these parameters?# 10. find the mean of residuals of the model. Is it zero, why do we want mean errors to equal zero?### T- Test Hyopothesis Test & Confidence Interval #### 11. An insurance company analyst believe that health insurance charges is $13,000 in the US, on average. # Based on the sample data you are given, test this hypothesis. Be clear on your calculations.# a. Write your hypothesis.# Ho: # Ha: # b. what is the p-value?# c. Conclude on the null hypothesis? Do you reject or fail to reject the null?# 12. Referring to the t.test code used above, what is the confidence interval at a 95% confidence level?# What is the range of insurance charges and what does this mean?### Mean Difference HT #### 13.The data has smoker variable. Test if insurance charges the same amount to smokers and non-smokers.# a. Write your hypothesis.# Ho: # Ha: # c. what is the p-value?# d. Conclude on the null hypothesis? Do you reject or fail to reject the null?## CHI SQUARE TEST OF INDEPENDENCE #### 14. The data has region and being a smoker. Test if smoking and region are independent from each other.# a. Write your hypothesis# Ho:# Ha: # b. What is the p-value?# c. Conclude on the null hypothesis at 5 % signifiance level.### ANOVA TEST OF MULTIPLE MEANS #### 15. The data has region variable. Test if insurance charges the same amount to all 3 regions.# a. Write your hypothesis.555555555555555555555555555555555555555555555554# b. what is the p-value?A0# c. Conclude on the null hypothesis? Do you reject or fail to reject the null?

CompetencyIn this project, you will demonstrate your mastery of the following competency:Implement appropriate language constructs for an object-oriented programming languageScenarioYou work for Global Rain, a software engineering company that specializes in custom software design and development. As a junior software developer, you are part of a software development team at Global Rain that collaborates to create software solutions for entrepreneurs, businesses, and government agencies around the world.You have been newly assigned to a development team at Global Rain that is currently working on a project for an innovative international rescue animal training company, Grazioso Salvare. Grazioso Salvare is seeking a software application that will help track rescue animals, sometimes referred to as search and rescue animals, which are obtained and trained by the company to rescue humans or other animals from difficult (or even life-threatening) situations.A portion of this work has already taken place on this project. Your team lead has assigned you to create one new class and modify the existing classes in the software application. You will deliver these class files to the team lead, who will consolidate them with the work from other team members and present the application to your client.DirectionsGrazioso Salvare has provided you with a specification document detailing its software needs. Other members of the Global Rain development team have started creating the RescueAnimal.java, Dog.java, and Driver.java class files. Your team lead has asked you to modify the existing classes and create a Monkey.java class as your contribution to the team.To gain a clear understanding of the client’s software requirements, review the Grazioso Salvare specification document in the Supporting Materials section. As you read, pay close attention to the attributes and methods that you will need to implement into the program.Open the Virtual Lab by clicking on the link in the Virtual Lab Access module. Then open your IDE. Follow the IDE tutorial in the Supporting Materials section to upload Grazioso.zip into your IDE. This zipped folder contains three class files. Once you upload the files, compile the code. Although the program is not complete, it will compile without error.Read through the code for each class. This will help you understand what code has been created and what code must be modified or created to meet the software requirements.Before you begin modifying and creating classes, your team lead reminds you to demonstrate industry standard best practices in all your code to ensure clarity, consistency, and efficiency among all software developers working on the program. This includes ensuring the following:In-line comments denote your changes and briefly describe the functionality of each method or element of the classAppropriate variable and method naming conventions are used throughout your codeOnce you have completed your pre-work, you are ready to begin your assigned tasks. To start, modify the RescueAnimal.java class file by adding accessor and mutator methods for each instance variable.Create the Monkey class, using the specification document as a guide. The Monkey class must do the following:Inherit from the RescueAnimal classImplement all attributes with appropriate data structuresInclude accessors and mutators for all implemented attributesSelect a method from the Software Requirements section of Grazioso Salvare’s specification document. Using the selected method, modify the Driver.java class file to do the following:Implement the method you have chosenAdd attributes, as needed, to support the required functionalityWhat to SubmitTo complete this project, you must submit the following:RescueAnimal.java Class FileModify the RescueAnimal.java class file in accordance with the requirements of the specification document. Be sure to include in-line comments that explicitly identify the changes you made as well as describe the functionality of the code.Monkey.java Class FileCreate a Monkey.java class file that meets the requirements laid out in the specification document. Be sure to include in-line comments that explicitly identify the changes you made as well as describe the functionality of the code.Driver.java Class FileModify the Driver.java class file in accordance with the requirements of the specification document. Be sure to include in-line comments that explicitly identify the changes you made as well as describe the functionality of the code.Dog.java Class FileSubmit the Dog.java class file, even though you were not required to make changes to it for this project.Supporting MaterialsThe following resource(s) may help support your work on the project:Grazioso Salvare Specification DocumentReview the specification document provided by the Grazioso Salvare client to learn about its software requirements and perform your development work.Grazioso.zip (Eclipse Project File)This zipped folder contains the RescueAnimal.java, Dog.java, and Driver.java class files. The RescueAnimal.java class contains the instance variables and a default constructor. In-line comments are provided to indicate where the accessor and mutator methods should be implemented. The Dog.java class contains an instance variable, a constructor, an accessor method, and a mutator method. You will use this class as part of the application. No changes are required in the Dog.java class. The Driver class will be used to run the application. It contains an empty main() method with in-line comments indicating where new functionality should be implemented.Uploading Files to Eclipse TutorialYou will write, test, and run each class file in an IDE. Review this tutorial to learn how to upload the Eclipse Project file (.jar), which contains all your class files, into your IDE.Downloading Files From Eclipse TutorialYou will write, test, and run your class files using an integrated development environment (IDE). Review this tutorial to learn how to save and export files from your IDE. Important: Do not change the names of any class files.The following rubric will be used to assess Project Two. Familiarize yourself with this document as you work on the project, and return to this rubric before you submit Project Two to make sure you've included everything you need to be successful. Project Two RubricCriteriaExemplaryProficientNeeds ImprovementNot EvidentValueRescueAnimal.javaN/AModifies a class by adding accessor and mutator methods for each class variable to meet software requirements (100%)Shows progress toward proficiency, but with errors or omissions; areas for improvement may include accessor or mutator method definitions, functionality, syntax, or logic (55%)Does not attempt criterion (0%)25Monkey.javaN/ACreates a class that inherits from another class and implements all attributes with appropriate data structures, accessors, and mutators to meet software requirements (100%)Shows progress toward proficiency, but with errors or omissions; areas for improvement may include inheritance implementation, attribute use, accessor or mutator method definitions, functionality, syntax, or logic (55%)Does not attempt criterion (0%)25Driver.javaN/AModifies the Driver class to implement a selected method including all attributes and functionality to meet software requirements (100%)Shows progress toward proficiency, but with errors or omissions; areas for improvement may include include method implementation, attribute use, functionality, syntax, or logic (55%)Does not attempt criterion (0%)25Industry Standard Best PracticesExceeds proficiency in an exceptionally clear, insightful, sophisticated, or creative manner (100%)Demonstrates industry standard best practices including appropriate in-line comments and variable and method naming conventions (85%)Shows progress toward proficiency, but with errors or omissions (55%)Does not attempt criterion (0%)25Total:100%