SOLUTION: An aerospace parts factory has two separate production lines making fasteners; each production line can be regarded as creating a separate population of fasteners, whose widths are

Question 232465: An aerospace parts factory has two separate production lines making fasteners; each production line can be regarded as creating a separate population of fasteners, whose widths are normally distributed. A sample of 50 fasteners is selected from each production line for quality control inspection. The width of each selected fastener is measured; and the standard deviations s1 and s2 in the measured widths of the selected fasteners from each production line are calculated. If the design standard deviation in fastener width for each production line population is unknown, can the sample values s1 and s2 be used instead? (Points: 3)
Yes
No

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Yes, you have no other choice.
Cheers,
Stan H.
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