Consider a sample with a mean of 30 and a standard deviation of 6. Use Chebyshev's theorem to determine the percentage of the data within each of the following ranges (to the nearest whole number).


20 to 40, at least
%

15 to 45, at least
%

22 to 38, at least
%

17 to 43, at least
%

13 to 47, at least
%