The most famous geyser in the world, Old Faithful in Yellowstone National Park, has a mean time between eruptions of 85 minutes. If the interval of time between the eruptions is normally distributed with a standard deviation 21.25 minutes. (e) (e) What might you conclude if a random sample of 15 time intervals between eruptions has a mean longer than 97 minutes? Select all that apply: A The population mean may be greater than 85 minutes. Or B. The population mean is 85 minutes, and this is just a rare sampling. Or, C. The population mean is 85, minutes, and this is an example of a typical sampling result. Or, D. The population mean must be less than 85 minutes, since the probability is so low. Or, E. The population mean cannot be 85 minutes, since the probability is so low. Or, F. The population mean must be more than 85 minutes, since the probability is so low. Or G. The population mean may be less than 85 minutes.
The most famous geyser in the world, Old Faithful in Yellowstone National Park, has a
Select all that apply:
A The population mean may be greater than 85 minutes. Or
B. The population mean is 85 minutes, and this is just a rare sampling. Or,
C. The population mean is 85, minutes, and this is an example of a typical sampling result. Or,
D. The population mean must be less than 85 minutes, since the
E. The population mean cannot be 85 minutes, since the probability is so low. Or,
F. The population mean must be more than 85 minutes, since the probability is so low. Or
G. The population mean may be less than 85 minutes.
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