From a sample with n 36, the mean duration of a geyser's eruptions is 3.72 minutes and the standard deviation is 0.98 minutes. Using Chebychev's Theorem, determine at least how many of the eruptions...

Extracted text: From a sample with n 36, the mean duration of a geyser's eruptions is 3.72 minutes and the standard deviation is 0.98 minutes. Using Chebychev's Theorem, determine at least how many of the eruptions lasted between 0.78 and 6.66 minutes. of the eruptions lasted between 0.78 and 6.66 minutes. At least (Simplify your answer.)