SOLUTION: Please can someone help me with this question it is a 2 part question and I don't understand either part please explain in details. I.Use Chebyshev's theorem to find what percent

Question 476256: Please can someone help me with this question it is a 2 part question and I don't understand either part please explain in details.
I.Use Chebyshev's theorem to find what percent of the valuses will fall between 156 and 276 for a data set with a mean of 216 and standard deciation of 12.
II. Use the Emperical Rule to find what two values 68% fo the data will fall between for a data set with a mean of 219 and standard deviation of 20. need answered ASAP PLEASE..
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
I. The values are 5 sd's off of the mean. By Chebyshev's theorem there should be AT LEAST % = % = 96%.
II. By the empirical rule, assuming a normal or nearly-normal distribution, the values should be 1 sd off of the mean, so the values should be between 219-20 = 199 and 239.
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