A study was performed to determine whether men and women differ in repeatability in assembling components on
Question:
A study was performed to determine whether men and women differ in repeatability in assembling components on printed circuit boards. Random samples of 25 men and 21 women were selected, and each subject assembled the units. The two sample standard deviations of assembly time were smen = 0.98 minutes and swomen = 1.02 minutes.
(a) Is there evidence to support the claim that men and women differ in repeatability for this assembly task? Use α = 0.02 and state any necessary assumptions about the underlying distribution of the data.
(b) Find a 98% confidence interval on the ratio of the two variances. Provide an interpretation of the interval.
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a 1 The parameters of interest are the time to assemble standard deviations 1 ...View the full answer
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Related Book For 
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger
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