Multiple Choice
The average age of Stokes County school board members over the last 40 years has been 55, but members have ranged from 32 to 70. Use the range rule of thumb to estimate the standard deviation of the members' ages.
A) 19
B) 25.5
C) 9.5
D) 52.3
Correct Answer:
Verified
Correct Answer:
Verified
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