Ten samples each of size 5 are drawn at reqular intervals from a manufacturingprocess. The sample means (X) and their ranges (R) are given below:Sample No. :Mean (X)1234781049454853394746395145Range (R) :7579.887Calculate the control limits in respect of X-chart and R-chart. (You are given : A2 = 0.58,D3 = 0, D4 = 2.15.) Comment on the state of control. Chart need not be drawn.%3D

Statistical process control (SPC) is a well known statistical tool. Which is especially used in…

Answered: Ten samples each of size 5 are drawn at…

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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Twenty-five samples of size 5 resulted in x = 5.42 and R = 2.0. Compute control limitsfor the x and R charts, and estimate the standard deviation of the process.
A manufacturer producing cocacola drinks wanted to set the specification of production to achieve process capability. He set his Upper Control Limit (UCL) = 0.03, proportion of defective items as 0.02. Calculate the number of sample observations (n) to be used to ensure 99.74 of the value.
The control limits for a 3-sigma c chart with n=2 when the process average is equal to 8 nonconformities for one inspection unit are Select one: a. LCL=0 UCL=16.5 b. LCL=-0.5 UCL=16.5 c. LCL=4 UCL=28 d. LCL=0 UCL=28 e. LCL=-4 UCL=28
With α = .01, the two-tailed critical region for a t test using a sample of n = 16 subjects would have boundaries of
Consider a normally distributed population of scores with a mean μ = 100 and σx = 10. What score has a Z value of -0.82?
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An existing process used to manufacture paint yields daily batches that have beenfairly well established to be normally distributed with mean μ = 800 tons, σ = 30tons. A modification of this process is suggested with the view of increasing production. Assume that the daily yields, using the modified process, are distributedas N(μ,(30)2), and suppose that a sample taken on 100 randomly chosen days ofproduction using the modified process yields an average of X¯ = 812 tons. Test at the1% level of significance H0: μ = 800 versus H1: μ > 800. What is the power of thetest at μ = 810? Graph the power function.
The population mean will always be the same as the mean of all possible X¯ that can be computed from samples of size 21.
The number of eggs that a female fly lays in her lifetime is normally distributed with a mean of 800 eggs and a standard deviation of 100 eggs. If a random sample of 15 flies is chosen, find the mean and standard eror of the mean using the Central Limit Theorem.
The defective percentage of bricks produced by a certain process is 20%. A new method isintroduced which is supposed to reduce the defective percentage. 150 bricks produced by thismethod showed 27 of them are defective. Does this data support the above claim at significancelevela = 0.01?
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