Question 476256
I. The values are 5 sd's off of the mean.  By Chebyshev's theorem there should be AT LEAST {{{100(1-1/5^2)}}}% = {{{100*(1 - 1/25)}}}% = 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.