Reconsider the power supply manufacturing process in Exercise 3.52. Suppose we wanted to improve the process. Can shifting the mean reduce the number of nonconforming units produced? How much would the process variability need to be reduced in order to have all but one out of 1000 units conform to the specifications?
Answer to relevant QuestionsIf x is normally distributed with mean and standard deviation , and given that the probability that x is less than 32 is 0.0228, find the value of . Derive the mean and variance of the exponential distribution. Ferric chloride is used as a flux in some types of extraction metallurgy processes. This material is shipped in containers, and the container weight varies. It is important to obtain an accurate estimate of mean container ...A random sample of 500 connecting rod pins contains 65 nonconforming units. Estimate the process fraction nonconforming. (a) Test the hypothesis that the true fraction defective in this process is 0.08. (b) Find the P-value ...Suppose that you are testing the following hypotheses where the variance is known: H0 : 100 H1 : 100 Find the P-value for the following values of the test statistic. (a) Z0 = −2.35 (b) Z0 = −1.99 (c) Z0 = ...
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