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Q1.(i) A manufacturing firm has previously sequenced its jobs using the "Shortest Operation Time" (SOT) rule. This has resulted in poor delivery performance with many jobs being delivered late. They have now changed to the "Earliest Due Date" (EDD) rule in an attempt to improve their service to customers. Two samples of data, one using SOT and one using EDD are shown below:
(a) Use a SIMPLE test to check if the data can be regarded as "reasonably" Normal.
(b) Has the delivery performance improved since the new (EDD) rule was introduced? Explain your answer.
Note: "Negative Lateness" means the job was Early.
(ii) Fluorescent light tubes used by a firm have a target life of 1600 hours. However, accumulated data shows a mean time to failure of 1570 hours. What proportion of the tubes could be expected to achieve the target life? (Explain your choice of model.).
What is cut-off date A chosen manually date whereby transactions usually are stopped to give for closing of the books of accounts for a known period: for audit purposes,
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a) Statistics are collecting, organizing, summarizing and presenting a set of data. b) Inferential statistics is the learn of a sample that enables us to make estimates about t
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I am Hussain and I have done master in Statistics. Currently I am doing Mphil Statistics from Pakistan. I want to get online Statistics Tutor job. So contact with me as soon as pos
Mode Mode, M is the value that has the largest number of occurrence or frequency in a data set, for instance, given the following data: 11 15 16 12 15 19 17 15 we can se
example of derivations in daily life
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Your company operates a machine shop, and, having heard you had experience in statistics and design of experiments, consulted you for your opinion on an experiment they want to run
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