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##### BUSI303 assignment 10

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Question;BUSI 3303;Assignment;10;Instructions;1. Please;answer the assignment questions in this docx file and save once you?re;satisfied. Assignment 10 accounts for 5% of the final grade.;2. There are;assignment problems. Please pay attention to the instructions;given at the end of each question in Bold.;3. To;resubmit your assignment, simply click to open ?Assignment 10? and click the;grey button ?Start New Submission? on the upper right corner of the ?Review;Submission History? webpage you?re directed to. You can make as many;submissions as you like before the due time. Only the latest submission will be;saved in the system.;Assignment Problems (70 points in total);Chapter 14.2, Method 3 (24 points in total);Twenty-five;samples of 100 items each were inspected when a process was considered to be;operating satisfactorily. In the 25 samples, a total of 135 items were found to;be defective.;a. What is the;estimate of the population proportion defective? Please provide at least one step of calculation and the correct answer;for full credit. (4 points);b. What is the;standard error of the proportion defective? Please provide the formula, at least one step of calculation, and the;correct answer for full credit. (6;points);c. Compute the;UCL and the LCL for the control chart using the 3 sigma rule. For each control limit, please provide the;formula, at least one step of calculation, and the correct answer full credit.;(14 points);Chapter 14.2, Application 7(46 points in total;Questions are changed);The Goodman Tire;and Rubber Company periodically tests its tires for tread wear under simulated;road conditions. To study and control the manufacturing process, 20 samples;each containing three radial tires, were chosen from different shifts over;several days of operation, with the following results. Assuming that these data;were collected when the manufacturing process was believed to be operating in;control, develop the R and (check;excel);a. Compute the;mean of all sample means and the mean range of the samples. For each statistic, please provide at least;one step of calculation and the correct answer for full credit. (8 points);b. For thechart;compute the UCL and the LCL. Refer to Table 14.3 of the;textbook for the factor values.For;each control limit, please provide the formula, at least one step of;calculation, and the correct answer full credit. (12;points);b. Plot the 20;sample means on thechart;with control limits. Please have the 20;sample means, the two control limits, and the central line on the chart. (10;points);c. Are there any;samples out of control based on thechart? (4 points);d. For thechart;compute the UCL and the LCL. Refer to Table 14.3 of the;textbook for the factor values.For;each control limit, please provide the formula, at least one step of;calculation, and the correct answer full credit. (12;points)

Paper#62058 | Written in 18-Jul-2015

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