Mathematics, 19.04.2021 16:00 LearningZone
Montgomery describes an experiment in which the tensile strength of a synthetic fiber is of interest to the manufacturer. It is suspected that strength is related to the percentage of cotton in the fiber. Five levels of cotton percentage are used, and five replicates are run in random order, resulting in the data below.
Cotton Percentage 1 2 3 4 5
15 7 7 15 11 9
20 12 17 12 18 18
25 14 18 18 19 19
30 19 25 22 19 23
35 7 10 11 15 11
Required:
a. Does cotton percentage affect breaking strength? Draw comparative box plots and perform an analysis of variance. Use α = 0.05.
b. Plot average tensile strength against cotton percentage and interpret the results.
c. Analyze the residuals and comment on model adequacy.
Answers: 2
Mathematics, 21.06.2019 18:30
Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.
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Mathematics, 21.06.2019 23:00
Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test
Answers: 3
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