melancholyg melancholyg

12-04-2024
Mathematics

Answered

In a sample of 110 eruptions of the Old Faithful geyser at Yellowstone National Park, the mean interval between eruptions was 129.58 minutes and the standard deviation was 108.53 minutes. A random sample of size 40 is selected from this population. What is the probability that the mean interval between eruptions is between 119 minutes and 139 minutes?

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