What is the probability that a randomly selected time interval between eruptions is longer than 116 minutes?   2. What is the probability that a random sample of 40 time intervals between eruption has a mean longer than 120 minutes?   3. What is the probavility that a random sample of 100 time intervals between eruptions has a mean longer than 120 minutes?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
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Chapter1: Combinatorial Analysis
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Suppose a geyser has a mean time between eruptions of 98 minutes. if the interval of time between the eruptions is normally distrivuted with a standard deciation of 39 minutes. awnser thefollowing questions.

 
1. What is the probability that a randomly selected time interval between eruptions is longer than 116 minutes?
 
2. What is the probability that a random sample of 40 time intervals between eruption has a mean longer than 120 minutes?
 
3. What is the probavility that a random sample of 100 time intervals between eruptions has a mean longer than 120 minutes?
 
4. what effect does increasing the sample size have on the probability?
 
5.what might you conclude if a random sample of 100 time intervals between eeuptions has a mean longer than 120 minutes?
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