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Mathematics, 04.12.2019 02:31 sarinaneedshelp01
Apolymer is manufactured in a batch chemical process. viscosity measurements are normally made on each batch, and long experience with the process has indicated that the variability in the process is fairly stable with o 20. fifteen batch
viscosity measurements are given as follows:
724, 718, 776, 760, 745, 759, 795, 756, 742, 740, 761, 749, 739, 747, 742
a process change that involves switching the type of catalyst used in the process is made. following the process change, eight batch viscosity measurements are taken:
735, 775, 729, 755, 783, 760, 738, 780
assume that process variability is unaffected by the catalyst change. if the difference in mean batch viscosity is 10 or less, the manufacturer would like to detect it with a high probability.
(a) formulate and test an appropriate hypothesis using a 0.10. what are your conclusions? find the p-value.
(b) find a 9096 confidence interval on the difference in mean batch viscosity resulting from the process change.
(c) compare the results of parts (a) and (b) and discuss your findings.
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