PROBLEM 1-A DESCRIPTIVE STATISTICS The operations manager of JME Tire Manufacturing Company wants to compare the actual

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Problem 1 A Descriptive Statistics The Operations Manager Of Jme Tire Manufacturing Company Wants To Compare The Actual 1 (22.3 KiB) Viewed 113 times

PROBLEM 1-A DESCRIPTIVE STATISTICS The operations manager of JME Tire Manufacturing Company wants to compare the actual inner diameter of three grades of tires, each of which is expected to be 575 millimeters. A sample of 10 tires of each grade was selected, and the results representing the inner diameters of the tires, arranged from smallest to largest, are as follows: GRADE X GRADE Y GRADE Z 568 573 578 570 574 560 575 575 547 578 577 600 584 578 590 585 574 570 578 575 575 581 578 577 575 584 578 580 574 590 For each of the three grades of tires, determine the mean, range, and standard deviation. RESULTS AND INTERPRETATION MEAN RANGE STD. DEVIATION GRADE X GRADE Y GRADE Z QUESTIONS 1. Which grade of tire has a greater variability? 2. Which grade of tire is providing better quality? Explain. 3. What would be the effect on your answers in Number 1 and Number 2 if the last value for grade Y and Z will be changed to 580 and 575, respectively. CONCLUSION