From a sample with n=36. the mean number of televisions per household is 3 with a standard deviation of 1 television. Using Chebychels Theorem, determine at least how many of the households have between 1 and 5 televisions.

At least ___of the households have between 1 and 5 televisions.
(Simplify your answer.)

*how do I solve this? The steps on the computer confuse me*