ZheQu L. answered 10/17/14
Tutor
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Multilingual Mechanical Engineer, Tutoring Math and Science Courses
It is not a calculus problem, but a statistics problem.
Z=(expectation-average)/standard deviation.
For 95% percentile, Z=1.6, thus 1.6=(expectation-41.2)/2.3---->expectation=44.88 cm height.
For easier measurement, set the height as 45 cm.