Question
A previous study of nickels showed that the the standard deviation of the weight of nickels is 200 milligrams. A coin counter manufacturer wishes to
A previous study of nickels showed that the the standard deviation of the weight of nickels is 200 milligrams. A coin counter manufacturer wishes to find the 99% confidence interval for the average weight of a nickel. How many nickels does he need to weigh to be accurate within 20 milligrams?
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Basic College Mathematics With Early Integers
Authors: Marvin L Bittinger, Judith A Beecher
3rd Edition
0321922794, 9780321922793
