ITM 601 Lecture Notes - Lecture 5: Learning Curve, Sampling Distribution, Process Capability

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Assignment 1: problem 3 sample size is 5, problem 1b e(cid:448)eryone"s ans(cid:449)ers (cid:449)ill be different, problem 2, you are not given r but can compute it, problem 3. Is this process producing according to the specification limit: lower specs and upper specs, you promise the customer to be in between these times between 20 and 30. Process capability ratio: this ratio confirms that variability is the problem in the process. Control charts for variables: another form of x-bar chart, when you get samples from a population and calculate the means of these samples, you have a sampling distribution. Spc: the whole idea of quality control is to collect samples and use samples to know the population, distribution of sample means has less variability. Example 3. 2: control limits based on z, z is based on the standard normal probability table. If you are inside the limits from observations, you are normal and if you"re outside, it"s a false alarm.

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