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Specification limits for a particular characteristic of a product indicate the values at which the product will operate properly. Assume we have a product with an upper specification limit of 7.25 and a lower specification limit of 4.0. As long as our product falls within these limits our buyers will be happy. We now investigate the process used to manufacture the product and find that the process (population) mean is 5 and the process (population) standard deviation is 0.5. Assuming the process is normally distributed, what percentage of items will fall outside the specification limits?
This activity is a revision of an activity found in Real Data: A Statistics Workbook Based on Empirical Data by Z. C Holcomb (1997). Published by Pyrczak Publishing.
In your environment (business or personal), please give an application of exponential smoothing and why you would use this technique.
Which of the following best explains how the F ratio examines differences among groups? A. The critical F is compared to the critical t.
For a discrete probability function that is given as: a. What is the expected value E(Y)? b. What is the standard deviation (σ) of the random variable Y?
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Of the drivers who stop at a gas station, 92% purchase gasoline, and 6% purchase both gasoline and oil. A total of 7% purchase oil.
At the end of class, our teacher said "If you're perceptive, you may have noticed that a regression analysis produced by the Excel Data Analysis ToolPak contains an ANOVA table.
The critical F value with 6 numerator and 60 denominator degrees of freedom at α = .05 is:
Using Sally's estimate of demand that follows, how many T-shirts should she produce for the upcoming event?
Does the overall data support the mayor's claim?
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