Posted by **Stella** on Tuesday, May 26, 2009 at 9:38pm.

Hi, I am trying to solve a problem using Chebyshev's Theorem. The problem says that:

A large sample of Northern Pike caught at Taltson Lake (Canada) showed that the average length was x (mean)=32.5 inches with sample standard deviation s=8.6 inches.

a.) Compute the coefficient of variation for this data. (The coefficient of variation is 26.26)

b.) Use Chebyshev's Theorem to find an interval centered on the mean in which we can expect at least 75% of the data to fall.

I don't understand Part B. Can someone please explain to me how to find the interval using Chebyshev's Theorem?