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- A time study has revealed an average observed time of 6 minutes, with a standard deviation of 1.20 minutes. These figures are based on a sample of 92 cycles. Is this sample large enough for analyst Anand Paul to be 95.0% confident that the standard time is within 5% of the true value? The required sample size is (enter your response rounded up to the nearest whole number). Is the sample large enough? No YesThe normal time for the overall process ____? minutes (round your response to two decimat places) The standard time for this process ____? minutes (round your response to two decimal places) The number of observations that are required for a 99% confidence level within 5 % accuracy ____? observations (round your response to the immediate higher whole number)You are the newly appointed assistant administrator at a local hospital, and your first project is to investigate the quality of the patient meals put out by the food-service department. You conducted a 10-day survey by submitting a simple questionnaire to the 400 patients with each meal, asking that they simply check off that the meal was either satisfactory or unsatisfactory. For simplicity in this problem, assume that the response was 1,000 returned questionnaires from the 1,200 meals each day. The results are as follows. December 1 December 2 December 3 December 4 December 5 December 6 December 7 December 8 December 9 December 10 NUMBER OF UNSATISFACTORY MEALS 77 74 62 70 82 50 50 42 54 58 619 SAMPLE SIZE 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 1,000 10,000
- At Quick Car Wash, the wash process is advertised to take less than 7 minutes. Consequently, management has set a target average of 390 seconds for the wash process. Suppose the average range for a sample of 10 cars is 11 seconds. Part 2 The UCL Subscript Upper R equals seconds and the LCL Subscript Upper R equals seconds. (Enter your responses rounded to two decimal places.)As part of an insurance company’s training program, participants learn how to conduct an analysis of clients’ insurability. The goal is to have participants achieve a time in the range of 30 to 45minutes. Test results for three participants were: Armand, a mean of 38 minutes and a standarddeviation of 3 minutes; Jerry, a mean of 37 minutes and a standard deviation of 2.5 minutes; andMelissa, a mean of 37.5 minutes and a standard deviation of 1.8 minutes.a. Which of the participants would you judge to be capable? Explain.b. Can the value of the Cpk exceed the value of Cp for a given participant? Explain.You are the newly appointed assistant administrator at a local hospital, and your first project is to investigate the quality of the patient meals put out by the food-service department. You conducted a 10-day survey by submitting a simple questionnaire to the 400 patients with each meal, asking that they simply check off that the meal was either satisfactory or unsatisfactory. For simplicity in this problem, assume that the response was 1,000 returned questionnaires from the 1,200 meals each day. The results are as follows: NUMBER OF UNSATISFACTORY SAMPLE MEALS SIZE December 1 83 1,000 December 2 64 1,000 December 3 53 1,000 December 4 59 1,000 December 5 74 1,000 December 6 80 1,000 December 7 61 1,000 December 8 49 1,000 December 9. 84 1,000 December 10 58 1,000 665 10,000
- The mean service time (x¯) of a physician is 25 minutes with a standard deviation (σ) of 1 minute. Upper specification limit (USL) is 30 minutes, whereas lower specification limit (LSL) is 20 for this process. What is the process capability ratio (cp) for this process? Is the process capable? Cp=1, barely capable Cp=1.5, capable Cp=1, not capable Cp=1.67, not capable Cp=1.67, definitely capableThe Money Pit Mortgage Company is interested in monitoring the performance of the mortgage process. Fifteen samples of five completed mortgage transactions each were taken during a period when the process was believed to be in control. The times to complete the transactions were measured. The means and ranges of the mortgage process transaction times, measured in days, are as follows: Sample Mean Range ew an example 1 2 16 12 7 12 Get more help. 3 6 5 4 5 6 7 8 9 15 10 10 13 14 11 9 10 16 13 16 11 Subsequently, samples of size 5 were taken from the process every week for the next 10 weeks. The times were measured and the following results obtained: D Sample Mean Range 16 9 8 17 12 12 18 19 13 7 7 5 20 15 13 MacBook Pro Click the icon to view the table of factors for calculating three-sigma limits for the x-chart and R-chart. a. Construct the control charts for the mean and the range, using the original 15 samples. Set up the R-chart by specifying the center line and three-sigma control…As part of an insurance company’s training program, participants learn how to conduct an analysis of clients’ insurability. The goal is to have participants achieve a time in the range of 30 to 45 minutes. Test results for three participants were the following: Armand, a mean of 36.0 minutes and a standard deviation of 2.0 minutes; Jerry, a mean of 37.0 minutes and a standard deviation of 2.0 minutes; and Melissa, a mean of 37.5 minutes and a standard deviation of 2.6 minutes. a.Compute process capability for the participants and determine whether each is capable, given 4-sigma quality standards. (Do not round intermediate calculations. Round your answers to 2 decimal places.)
- Your twenty observations of Dr. Knowitall reveal the following information. Assume that the estimate is to be within 5 percent of the true proportion 96 percent of the time Activity Observed Number of Times Observed With patient 6 Reviewing test results 5 On phone 5 Idle 3 Away on emergency 1 Not available 1 Total 21 Calculate the sample size needed to estimate the proportion of time Dr. Knowitall spends away on emergencies.please help with this question using the sensitivity report and explain how you got the answerAs part of an insurance company’s training program, participants learn how to conduct an analysis of clients’ insurability. The goal is to have participants achieve a time in the range of 30 to 45 minutes. Test results for three participants were the following: Armand, a mean of 36.0 minutes and a standard deviation of 3.0 minutes; Jerry, a mean of 34.0 minutes and a standard deviation of 2.0 minutes; and Melissa, a mean of 37.5 minutes and a standard deviation of 1.7 minutes. a.Compute process capability for the participants and determine whether each is capable. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Melissa ? Cp what is it