Thinking Like an Engineer: An Active Learning Approach (4th Edition)
Thinking Like an Engineer: An Active Learning Approach (4th Edition)
4th Edition
ISBN: 9780134639673
Author: Elizabeth A. Stephan, David R. Bowman, William J. Park, Benjamin L. Sill, Matthew W. Ohland
Publisher: PEARSON
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Chapter 14, Problem 12ICA

You test several temperature probes by inserting them in boiling ethanol (theoretical boiling point is 78.4 degrees Celsius), recording the readings, removing and drying the probe, and repeating the process 20 times. The distribution curves for the probes are shown in the previous question. The solid line “baseline” curve in every graph is the same curve as for a previous probe tested 20 times in boiling ethanol.

a. Which probe was tested 40 times instead of 20 times?

b. Which probe has the highest standard deviation?

c. During the testing of one probe, you suspect your assistant of using formic acid (which boils at 101 degrees Celsius) instead of ethanol. Which probe did your assistant incorrectly test?

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