The following six questions are another example showing that classes and objects are an essential part of many software applications. Assume that you found a job as a software engineer for a streaming service. You will be working with movies on a daily basis.
Read DetailsYou have an external file named students_data.txt with two columns: name and major, like the following: Alice,MISBob,FinanceCharlie,MarketingDan,MISEdward,Finance Please complete the code below so that your code can create an object for each student in the “MIS” major. Each blank is 3 pts. class Student: def __init__(self, name): self.__name = nameclass MIS(Student): # Complete the __init__ for MIS subclass, ensuring it inherits from Student, and creating a new attribute “major” def __init__(self, name, major): # Call the __init__ of the superclass [q1] # Set the major attribute using the correct parameter, specifically for this subclass [q2] # Assume that the following main program is in the same script. def main(): students = open(‘students_data.txt’, ‘r’) student_dict = {} for student in students: ### Explanation: The following code processes student by splitting the first and second element into name and major name, major = student.rstrip(‘\n’).split(‘,’) ### Complete the “if” condition so that this code creates objects only for MIS students [q3] #Create an object, named “stu”, for MIS student (based on the name and major in the current iteration). [q4] #Insert a key-value pair into student_dict, where the key is the name and the value is the stu object. [q5]main()
Read DetailsA small manufacturing system produces parts for sea kayaks in La Jolla, San Diego. The parts arrive from an upstream Poisson process with an arrival rate of 1 part every 5 minutes. All the parts that enter the system must go through a station which houses 2 prefabrication machines. A part, though, only requires to be processed by 1 of the 2 machines during prefab. The prefab time is exponentially distributed with the same mean for each of 8 minutes. If all the machines at the prefab station are busy, then the part will wait for the next available machine. [HINT: The machines do NOT break down and thus do not need to be repaired]. a. What is the probability that both machines are idle? Please round your answer to 3 decimal places (e.g. #.###). [PartA] (4pts) b. What is the overall system utilization? [PartB] (2pts) c. What is the average number of parts waiting for prefab? [PartC] (2pts) d. A floor technician suggests that the system utilization rate should be lower (less than 30%) if the company wants to maintain the life of the machines and avoid machine failures. Do you think adding a third machine with the same processing rate will achieve that goal? Please show the new utilization rate to support your answer. Please express your answer to 3 decimal places and your asnwer (e.g., #.###, yes or #.###, no) and explain why on your scratch paper. [PartD] (2pts)
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