A probability distribution has a mean of 25 and a standard deviation of 4. Use Chebyshev's inequality to find a bound on the probability that an outcome of the experiment lies between the following.
(a) 20 and 30
(b) 15 and 35

Question

A probability distribution has a mean of 25 and a standard deviation of 4. Use Chebyshev's inequality to find a bound on the probability that an outcome of the experiment lies between the following. 
(a)    20 and 30
(b)    15 and 35

anonymous · Answer

Can anyone confirm or correct what I got?
(a) .36 or 36%
(b) .84 or 84%