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A coin has been weighted 5 times under identical conditions with following results
[g]: 23.694, 23.697, 23.698, 23.692, 23.693.
(a) What is the error (standard deviation) of the measurement system?
(b) The repeatability of a measurement system according to ISO 5725 is the difference which can be expected between two subsequent measurements under
identical conditions. Calculate the repeatability with confidence 95% for the
given measurement system.
(c) If the real weight of the coin is 23:7g: Does the measurement system provide a
biased result (use α = 5%)?