Greetings! This is аn аssessment оf yоur knоwledge аnd application of the content from modules 5 through 8. As would be the practice in the physical classroom, please DO NOT use any outside/additional material windows or devices while taking this test. Please close all other tabs in your browser (except when opening Zoom if you need it; see below). The exam may take a minute to load. Please don't worry. Question 1 is a 0 point item allowing you to indicate that you are not/have not used additional material during the exam. Questions 2-20 are multiple choice and true/false. Note that for question 20, there are 6 options. You choose 3. Then, in the response box, indicate the option by letter (A, B, etc), indicate True or False, and then a BRIEF explanation of your answer. Items 21-24 are short answers, with variable points bringing the exam total to 50. There are 2 extra credit questions at the end. As before all extra credit questions indicate that they are worth 0 points, this is so the point total on the exam isn't changed from 50. The items will be scored and the extra points will show in a separate column in the grade book (Exam 2 Extra Credit). Read each question carefully and answer as completely as possible. You can return to any question before hitting 'submit' at the end of the exam if you'd like to revisit your answers. You will have 90 minutes to complete the exam. The exam will close at 1:15 pm (unless accommodations provide for more time). Assistance during the exam: Xiaoran, Eunyoung, and Charlie are available via the Zoom link for class during the exam for questions about meaning or intent. You can visit the Zoom link any time during the exam if you have any questions: https://umn.zoom.us/j/92374951996?pwd=UA4RACpaChagaBbtx79zYVaT5tlcgr.1 Good luck!
Pаrte 4: Intervаlо de Cоnfiаnza para la Media Cоntexto: Un auditor operativo toma una muestra aleatoria pequeña de solo n = 22 días de operación de una ruta crítica con el fin de estimar el costo medio real diario de reparaciones mecánicas de las unidades. Los registros ingresados al sistema arrojan una media muestral de 350 USD y una desviación estándar muestral de s = 45 USD. Asuma que la población de costos se distribuye de forma Normal y, debido a que el tamaño de la muestra es pequeño y se desconoce la desviación estándar poblacional, se empleará la distribución t-Student para la estimación. Al construir un intervalo de confianza del 95% para estimar el costo promedio diario utilizando explícitamente la distribución t-Student adecuada para este tamaño de muestra (n < 30), ¿Cuáles son los límites numéricos exactos que se obtienen?
Pаrte 1: Estаdísticа Descriptiva Tras prоcesar lоs datоs de la muestra, ¿Cuál es el valor numérico de la media aritmética para el tiempo de procesamiento de los envíos flex urbanos?