4)Curve Grades Statisticians use the concepts of mean and standard deviation todescribe a collection of numbers. The mean is the average value of the numbers,and the standard deviation measures the spread or dispersal of the numbersabout the mean. Formally, if x1, x2, x3, ..., xn is a collection of numbers, thenthe mean isх1 + x2 + х3 ++ xn...m =nand the standard deviation is(x1 – m)2 + (x2 – m)² + (x3 – m)2 ++ (x4 – m)²...S =n The file Scores.txt contains exam scores. The first four lines of the file hold thenumbers 59, 60, 65, and 75. Write a program to calculate the mean andstandard deviation of the exam scores, assign letter grades to each exam score,ES, as follows, and then display information about the exam scores and thegrades.Possible outcome:Number of scores: 14Average score: 71.0Standard deviation of scores: 14.42GRADE DISTRIBUTION AFTER CURVING GRADES.A: 2B: 1C: 6D: 4F: 1ES > m + 1.5sAm + .5s < ES < m + 1.5sm - .5s < ES < m + .5sCm = 1.5s < ES < m - .5sDES < m1.5s

According to the information given:- We have to follow the instruction to get the desired output for…

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Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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The Knapsack Problem is a famous computer science problem that is defined as follows: imagine you are carrying a knapsack with capacity to hold a total of weight C. You are selecting among n items with values A={a_1, a_2, ... , a_n} and associated weights W={w_1, w_2, ... , w_n}. Here the weights and values are all positive (but not necessarily unique). You wish to maximize the total value of the items you select not exceeding the given weight capacity, i.e. maximize sum_{a in A} such that sum_{w in W} <= C. Please note that you can only select your items once. a) We can reformulate this as a 2D bottom-up dynamic programming problem as follows. Define T_{i,j} as the highest possible value sum considering items 1 through i and total weight capacity j (j <= C). What is the base case i.e. T_{0,j} for all j and T_{i,0} for all i?, and What is the loop statement?
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26 Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Consider the following pair of graphs: X o1:02 48 V3 us V4 If the given graphs are isomorphic, then identify the correct mapping between the sets of vertices of the two graphs. Multiple Choice Aun) = v1, Au2) = v2, luz) = v3, fU4) = V5, and fu5) = v4 uiz Tools AU) = V, Au2) = v3, Auz) = v2, fu4) = V5, and fug) = v4 The two graphs are not isomorphic. 00% Aun) = V1, Au2) = V3, Auz) = v2, Au4) = v4, and flu5) = v5 se
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C PROGRAMMING Implement dijkstras alorithm Check that the Graph graph, and starting node, id, are valid• Create the set S containing all the networks (vertices) except the source node (you might wantto use an array for this.• Create an array to represent the table D and initialise it with the weights of the edges from thesource node, or infinity if no edge exists. You should use the constant DBL_MAX to representinfinity.• Create an array to represent the table R and initialise it with the next hops if an edge existsfrom the source, or 0 otherwise.• Then repeatedly follow the remaining rules of Dijkstra’s algorithm, updating the values in D andR until S is empty.• Each of the values required to complete the above can be found by calling the variousfunctions (get_vertices(), get_edge(), edge_destination(), edge_weight(), etc.)in the supplied graph library.• Once Dijkstra’s algorithm has run, you will need to create the routing table to be returned byallocating enough memory for the…
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sures the spread or dispersal x2, x3, ..., xn is a collection