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Out of a total of 10 college textbooks estimate the standard deviation of their ages if the oldest textbook is known to be 7.9 years old and the newest textbook is 1.3 years old.

A. 0.5 years
B. 1.1 years
C. 2.3 years
D. 2.9 years
E. 3.3 years

User Steed
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1 Answer

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11 votes

Answer: The answer is D 2.9 years

Step-by-step explanation:

User Jack The Baker
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