bsad-360-case-study-1-1

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Read Foundation College, Samahni *

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2071

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Industrial Engineering

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Nov 24, 2024

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docx

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2

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In-class Case Study (1) Name: ______Guotao Huang__________________ Student ID: _______ C836861418________ BSAD 360 Managing Ashland MultiComm Services - PHASE 1 The computer operations department has a business objective of reducing the amount of time to fully update each subscriber’s set of messages ina special secured email system. An experiment was conducted in which 24 subscribers were selected and three different messaging systems were used. Eight subscribers were assigned to each system, and the update times were measured. The results are presented in the table below: System1 System2 System3 38.8 41.8 32.9 42.1 36.4 36.1 45.2 39.1 39.2 34.8 28.7 29.3 48.3 36.4 41.9 37.8 36.1 31.7 41.1 35.8 35.2 43.6 33.7 38.1 Analyze the data in the table above and write a short interpretation of your findings using an alpha = 0.05 level of significance to make your decision. Include the hypothesis statements, your results, and your determination if any of the systems are significantly faster than the others. Use post-hoc tests if necessary. Managing Ashland MultiComm Services - PHASE 2 After analyzing the data in Phase 1, the computer operations department team decided to also study the effect of the connection media used (cable or fiber). The team designed a study in which a total of 30 subscribers were chosen. The subscribers were randomly assigned to one of the three messaging systems so that there were five subscribers in each of the six combinations of the two factors – messaging system and media used. Measurements were taken on the updated time. The following table summarizes the results: Technology System1 System2 System3 Cable 4.56 4.17 3.53 Cable 4.90 4.28 3.77 Cable 4.18 4.00 4.10 Cable 3.56 3.96 2.87 Cable 4.34 3.60 3.18 Fiber 4.41 3.79 4.33 Fiber 4.08 4.11 4.00 Fiber 4.69 3.58 4.31 Fiber 5.18 4.53 3.96 Fiber 4.85 4.02 3.32
Analyze the data in the table above and write a short interpretation of your findings using an alpha = 0.05 level of significance to make your decision. Include the hypothesis statements, your results, and your determination if any of the systems are significantly faster than the others. Use post-hoc tests if necessary. Make sure you indicate the significance of each of the two factors and/or the interaction between them on update time.
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