1- Read the dataset in Boston. csv into R. Call the loaded data Boston. Make sure that you have the directory set to the correct location for the data.2.
2- The response is nox and the predictor is dis. Use the poly() function to fit a cubic polynomial regression to predict nox using dis. Report the regression output.
3- Your assistant business analyst, Tom Johnson, is considering predicting nox using dis as a predictor. He proposes models from degree 5, degree 4, and degree 3, and degree 2 polynomial regression. Please perform cross-validation using caret package to select the optimal degree for the polynomial and justify your answer.
4- Recommend that he perform the following GAM analysis.
Predict nox using a smoothing spline of degree 3 in dis and a smoothing spline of degree 2 in medv.
Predict nox using a smoothing spline of degree 2 in dis and a smoothing spline of degree 1 in medv.
Perform anova analysis. Recommend the best model and justify your answer.

[java] create an application called registrar that has the following classes: a. a student class that minimally stores the following data fields for a student: - name - student id number - number of credits - total grade points earned and this class should also be provides the following methods: - a constructor that initializes the name and id fields - a method that returns the student name field - a method that returns the student id field - methods to set and retrieve the total number of credits - methods to set and retrieve the total number of grade points earned. - a method that returns the gpa (grade points divided by credits) b. an instructor class that minimally stores the following data fields for an instructor: - name - faculty id number - department the following methods should be provided: - a constructor that initializes the name and id fields - methods to set and retrieve the instructor’s department. c. a course class that minimally stores the following data for a course: - name of the course- course registration code- maximum number of 35 students- instructor- number of students- students registered in the course (an array)the following methods should also be provided: - a constructor that initializes the name, registration code, and maximum number of students- methods to set and retrieve the instructor- a method to search for a student in the course; the search should be based on an id number.- a method to add a student to the course. if the course is hill, then an exception with an appropriate message should be raised (try creating your own exception class for this). also, be sure that the student is not already registered in the course. the list of students should be in the order that they registered.- a method to remove a student from the course. if the student is not found, then an exception with an appropriate message should be raised (use the same exception class mentioned a method that will allow course objects to be output to a file using object serialization- a method that will allow course objects to be read in from a file created with object serializationyou will note that the student and instructor classes described above have some commonality. create aperson class that captures this commonality and uses it as a base class for student and instructor. this class should be responsible for the name and id fields and also provide atostring method that returns a string of the form name, id. this will be the inheritedtostring method for the student and instructor classes.1. draw a uml diagram for diss application.2. implement the previous classes in java. write a main program that can serve as a test class that tests all of the methods created and demonstrates that they are working

Me dangers of social media and the internetexplain what each means: 1) social media and phones have become an addiction.2) outside people have access to you all the time.3) cyberstalking4) cyberbullying5) catphishing6) viruses7) identity theft8) credit card fraud9) hacking10) money schemes

Brad wants to buy flowers for his friend with 33 dollars. the daisies are 1 dollar each and the roses are 2 dollars each he buy 3 more daisies than roses how much did the roses cost