Thirty-five samples of size 7 each were taken from a fertilizer-bag-filling machine at Panos Kouvelis Lifelong Lawn Ltd. The results were: Overall mean = 54.75 lb.; Average range R = 1.64 lb.a) For the given sample size, the control limits for 3-sigma x chart are:Upper Control Limit (UCL) = 55.437 lb. (round your response to three decimal places).Lower Control Limit (LCLx) = 54.062 lb. (round your response to three decimal places).b) The control limits for the 3-sigma R-chart are:Upper Control Limit (UCLR) = lb. (round your response to three decimal places). SampleSize, n234567891012Mean Factor,A₂1.8801.0230.7290.5770.4830.4190.3730.3370.3080.266Upper Range,D43.2682.5742.2822.1152.0041.9241.8641.8161.7771.716Lower Range,D3000000.0760.1360.1840.2230.284

35 samples of size 7 were taken.i.e. n= 7The overall mean The average range wanted to calculate the…

Answered: Thirty-five samples of size 7 each were…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 4 points with 99% confidence assuming s=16.4 based on earlier studies? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size required? LOADING... Click the icon to view a partial table of critical values. A 99% confidence level requires nothing subjects. (Round up to the nearest subject.) A 90% confidence level requires nothing subjects. (Round up to the nearest subject.) How does the decrease in confidence affect the sample size required? A. Decreasing the confidence level decreases the sample size needed. B. Decreasing the confidence level increases the sample size needed. C. The sample size is the same for all levels of confidence.
Management at Deluxe Diner is in process of establishing a quality control system for the time it takes to initially make contact with a table of patrons. A sample of size 3 is taken on each of the five different days. Suppose you calculated = 100 and R = 40. What is the 3-sigma UCL for the X-bar chart?
Fill in the missing values for this ANOVA summary table: Source of Variation SS df MS F Between 1313.964 2 Within TOTAL 2795.964 15 Accordong to the given information, how many groups (or population means) are being compared using this ANOVA? (Hint: Use the df values to compute it) what is the total number of data used for this ANOVA? (Hint: Use the df values to compute it)
To determine if their 1.33 centimeter galvanized pipes are properly adjusted, Fogarty Manufacturing has decided to use an X-Chart which uses the range to estimate the variability in the sample. Answer How to enter your answer Step 3 of 7: What is the Lower Control Limit? Round your answer to three decimal places. 1 ~ 3 Sample Mean Sample Range 1.33 1.3320 1.29 1.38 1.3300 Period obs1 obs2 obs3 obs4 obs5 1.34 1.29 1.35 2 1.35 1.35 3 1.34 1.35 1.36 1.29 1.29 1.31 1.32 1.33 1.34 1.3360 1.35 1.30 1.3340 1.32 1.38 1.3260 1.37 1.33 1.31 1.31 1.29 1.30 1.35 1.31 1,32 1.34 1.38 8 1.35 1.33 1.31 1.34 1.3180 1.33 1.3300 1.34 1.37 1.28 1.36 9 10 1.32 1.37 1.30 1.37 1.29 1.32 1.30 1.28 1.29 11 1.35 1.36 1.38 12 1.36 1.32 1.31 1.30 1.35 13 1.29 1.35 1.32 1.32 1.37 1.35 1.35 1.34 1.32 1.34 14 15 1.32 1.36 1.29 1.32 1.35 45 Table 67 Control Chart 1.35 1.28 Copy Table Average Values The average of the selected cell(s) is 1.340. Copy Value 1.3300 1.3440 1.3080 1.3400 1.3280 1.3300 1.3400 1.3280 0.06…
A company manufactures an electrical cooling fan. When the fans are performing properly, samples of 200 fans average 12.5 watts with an average range of 1.2 watts. A 3σ control chart program is being used to monitor the performance of the fans, and these data from the 10 most recent samples were collected: Sample Number Sample Mean Sample Range 1 12.5 1.1 2 12.45 1.2 3 12.55 0.9 4 12.50 0.8 5 12.45 0.9 6 12.60 1.0 7 12.48 1.4 8 12.46 1.1 9 12.56 0.9 10 12.48 0.8 Compute the 3σ control limits and center line for an ⁻x chart. Compute the 3σ control limits and center line for an R chart. Plot the sample data on the ⁻x and R charts and decide if the performance of the fan is in control.
A study was carried out to compare mean customer satisfaction scores at service centers in city A, in city B, and in city C. The sample means on a scale of 0 to 10 were 8.4 in city A, 8.6 in city B, and 7.9 in city C. Each sample size = 100, MS error = 0.41, and the F test statistic = 27.4 has P-value <0.001. Complete parts a through d. a. What is the margin of error for separate 95% confidence intervals? (For df = 297, 1.025 = 1.968.) margin of error = *** tv (Round to two decimal places as needed.) Clear all Check answer ST A
Please answer the incorrect ones only.
To determine if their 1.33 centimeter galvanized pipes are properly adjusted, Fogarty Manufacturing has decided to use an X-Chart which uses the range to estimate the variability in the sample. Answer How to enter your answe Step 1 of 7: What is the Center Line of the control chart? Round your answer to three decimal places. THWNHO Va 10 Period obs1 obs2 obs3 obs4 obs5 Sample Mean Sample Range 1 1.34 1.29 1.35 1.33 1.35 1.3320 2 1.35 1.35 1.29 1.38 1.28 1.3300 3 1.3360 4 1.30 1.3340 5 1.34 1.35 1.32 1.33 1.34 1.36 1.29 1.37 1.35 1.29 1.31 1.33 1.32 1.31 1.32 1.34 1.38 1.3260 1.38 1.34 1.33 1.31 1.31 1.31 1,29 1.3180 1.3300 1.35 1.33 1.30 1.35 1.32 1.3300 1.34 1.3440 1.37 1.3080 1.35 1.37 1.28 1.36 1.37 1,29 1.30 1.28 1.30 1.32 1.29 1.36 1.38 1.3400 1.36 1.32 1.31 1.30 1.35 1.3280 1.29 1.37 1.35 1.32 1.32 1.35 1.35 1.34 1.32 1.34 1.32 1.36 1.29 1.32 1:35 1.3300 1.3400 1.3280 11 12 13 Table 14 Control Chart 15 Copy Table Average Values The average of the selected cell(s) is 1.340. Copy…
The herbal supplement ginkgo biloba is advertised as producing an increase in physical strength and stamina. To test this claim, a sample of n = 120 adults is obtained and each person is instructed to take the regular daily dose of the herb for a period of 30 days. At the end of the 30 days each person is tested on a standard treadmill task for which the average age-adjusted score is μ = 15. The individuals in the sample produce a mean score of M = 17.4 with SS = 1260. Are these data sufficient to conclude that the herb had a statistically significant effect? Conduct as a two-tailed test, using all hypothesis steps with p < .05. BONUS POINTS: Calculate the 95% confidence interval
To determine if their 1.33 centimeter galvanized pipes are properly adjusted, Fogarty Manufacturing has decided to use an X-Chart which uses the range to estimate the variability in the sample. Answer Table Step 4 of 7: Use the following sample data, taken from the next time period, to determine if the process is "In Control" or "Out of Control". Observations: 1.4, 1.42, 1.38, 1.37, 1.4 Sample Mean: 1.394 Period 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Control Chart Copy Table Average Values The average of the selected cell(s) is 1.340. Copy Value obs1 obs2 obs3 obs4 obs5 Sample Mean Sample Range 1.34 1.29 1.35 1.33 1.35 1.3320 1.35 1.35 1.29 1.38 1.28 1.3300 1.34 1.35 1.32 1.33 1.34 1.3360 1.36 1.29 1.37 1.35 1.30 1.3340 1.29 1.31 1.33 1.32 1.38 1.3260 1.31 1.32 1.31 1.31 1.3180 1.34 1.33 1.3300 1.38 1.31 1.29 1.34 1.35 1.33 1.30 1.35 1.32 1.3300 1.34 1.37. 1.28 1.36 1.3440 1.37 1.30 1.3080 1.37 1.29 1.30 1.28 1.35 1.36 1.32 1.31 1.32 1.29 1.36 1.38 1.3400 1.3280 1.30 1.35 1.32 1.32 1.29…

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