Х Sample means and the central limit theorem
Geologists recorded the duration (in seconds) of over 500 recent eruptions of the Old Faithful geyser in
Yellowstone National Park. Here's a histogram showing the distribution of their data:
A = 210
0.26
Relative frequency
0.22
0.18
0.15
0.11
0.07
0.04
0.00
75
300
150 225
Duration (seconds)
Suppose that we were to take random samples of 30 eruptions from this population and calculate T as the
sample mean duration of the eruptions in each sample.
which ranh chowe the most reconshlo annrovimation of the compline dictribution of
4 of 4
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