7.2-11. The Biomechanics Lab at Hope College tested healthy old women and healthy young women to discover whether or not lower extremity response time to a stimu- lus is a function of age. Let X and Y respectively equal the independent response times (in thousandths of a second) for these two groups when taking steps in the anterior direction. Find a one-sided approximate 95% confidence interval that is a lower bound for x-Hy if nx = 60 obser- vations of X yielded x = 671 and sx = 129, while ny = 60 observations of Y yielded y = 480 and sy = 93.

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7.2-11. The Biomechanics Lab at Hope College tested
healthy old women and healthy young women to discover
whether or not lower extremity response time to a stimu-
lus is a function of age. Let X and Y respectively equal the
independent response times (in thousandths of a second)
for these two groups when taking steps in the anterior
direction. Find a one-sided approximate 95% confidence
interval that is a lower bound for x-Hy if nx = 60 obser-
vations of X yielded x = 671 and sx = 129, while ny = 60
observations of Y yielded y = 480 and sy = 93.
Transcribed Image Text:7.2-11. The Biomechanics Lab at Hope College tested healthy old women and healthy young women to discover whether or not lower extremity response time to a stimu- lus is a function of age. Let X and Y respectively equal the independent response times (in thousandths of a second) for these two groups when taking steps in the anterior direction. Find a one-sided approximate 95% confidence interval that is a lower bound for x-Hy if nx = 60 obser- vations of X yielded x = 671 and sx = 129, while ny = 60 observations of Y yielded y = 480 and sy = 93.
7.2-11 [157.227,00).
Transcribed Image Text:7.2-11 [157.227,00).
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