In the Case Study, we interpreted the phrase “much less than” to mean a measurement that is 2 or more standard deviations below the mean. For Exercises 115–118, suppose we interpret the phrase “much less than” to mean a measurement that is 3 or more standard deviations below the mean.
117. Assume that greed attacked the Master of the Mint and he went for the big debasement from 128 grams per coin to 127.3 grams per coin.
7.1.117
(a) 0.0002 (b) 0.0002, 0.9998 (c) The value found in the original case study in the text favors the Master of the Mint.