Statistics Homework Solutions
#2550
Chebyshev's theorem - standard deviation
A scientific calculator operates on the average 5.3 hour before needing a recharge. According to Chebyshev's theorem, if the operating times have a standard deviation of 0.6 hour.
A. Between what 2 values will at least 75% of the operating times fall?
B. At least what percentage of the operating times will fall in the interval from 3.5 to 7.1 hours?
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