Question
The most famous geyser in the world, Old Faithful in Yellowstone National Park, has mean time between eruptions of 85 minutes. Past research has shown
The most famous geyser in the world, Old Faithful in Yellowstone National Park, has mean time between eruptions of 85 minutes. Past research has shown that the population standard deviation is known to be 21.25 and that the distribution of time between eruptions is bimodal.
What is the probability that a random sample of 35 time intervals between eruptions has a mean longer than 93 minutes?
What is the probability that a random sample of size 15 time intervals between eruptions has a mean longer than 93 minutes?
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An Introduction to Analysis
Authors: William R. Wade
4th edition
132296381, 978-0132296380
