Question: Old Faithful is a famous geyser at Yellowstone National Park. From a sample with n = 32, the mean duration of Old Faithfuls eruptions is

Old Faithful is a famous geyser at Yellowstone National Park. From a sample with n = 32, the mean duration of Old Faithful’s eruptions is 3.32 minutes and the standard deviation is 1.09 minutes. Using Chebychev’s Theorem, determine at least how many of the eruptions lasted between 1.14 minutes and 5.5 minutes.

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