In a sample of 500 eruptions of the Old Faithful geyser at Yellowstone National Park, the mean
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In a sample of 500 eruptions of the Old Faithful geyser at Yellowstone National Park, the mean duration of the eruptions was 3.32 minutes and the standard deviation was 1.09 minutes. A random sample of size 30 is selected from this population. What is the probability that the mean duration of eruptions is between 2.5 minutes and 4 minutes?
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Elementary Statistics Picturing The World
ISBN: 9780321911216
6th Edition
Authors: Ron Larson, Betsy Farber
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