10-69. + 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 a = 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 vari- ances. Provide an interpretation of the interval.
10-69. + 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 a = 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 vari- ances. Provide an interpretation of the interval.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
Perform the exercise manually.
Please
Transcribed Image Text:10-69. + 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 a = 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 vari-
ances. Provide an interpretation of the interval.
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