A researcher has 32 experimental units to use in a study to compare 4 different methods of surface etching. Suppose that the units have been labeled 1, 2, ..., 32.Construct a random assignment of the units to the 4 treatments (8 per treatment). Explain your method by showing your randomization method and output numbers. Print your answer in a row/column form with the rows being `Method number`, and the columns being

Create a pseudocode design to prompt a student for their student id and the titles of the three classes they want to add. the solution should display the student’s id and a total bill. • bill a student using the following rules: o students can only add up to 3 classes at a time.

Which of these is most responsible for differences between the twentieth century to the twenty-first century?

Write a method that takes in an array of point2d objects, and then analyzes the dataset to find points that are close together. be sure to review the point2d api. in your method, if the distance between any pair of points is less than 10, display the distance and the (x,y)s of each point. for example, "the distance between (3,5) and (8,9) is 6.40312." the complete api for the point2d adt may be viewed at ~pf/sedgewick-wayne/algs4/documentation/point2d.html (links to an external site.)links to an external site.. try to write your program directly from the api - do not review the adt's source code.