Multiple Choice
A study of nickels showed that the the standard deviation of the weight of nickels is milligrams. A coin counter manufacturer wishes to find the 95% confidence interval for
The average weight of a nickel. How many nickels does he need to weigh to obtain an
Average accurate to within 20 milligrams?
A) 154
B) 57
C) 217
D) 306
Correct Answer:
Verified
Correct Answer:
Verified
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