Question 1093012
The way I read it is: If you plug in some value for the femur length
( f ), then whatever you compute for {{{ H }}}, the true value could
be as much as {{{ 3.42 }}} cm higher or lower than that
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given:
{{{ f = 51.6 }}} cm
{{{ H = 2.26*51.6 + 66.4 }}}
{{{ H = 116.616 + 66.4 }}}
{{{ H = 183.02 }}}
and
{{{ H + 3.42 = 183.02 + 3.42 }}}
{{{ H + 3.42 = 186.44 }}}
and
{{{ H - 3.42 = 183.02 - 3.42 }}}
{{{ H - 3.42 = 179.6 }}}
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{{{ H }}} can be equal to or larger than the lower limit,
but must be less than or equal to the upper limit
{{{ 179.6 <= H <= 186.44 }}}
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Get another opinion if you choose