# Help with a probabilty question, please?

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Bigdog1540
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A geyser has a mean time btwn eruptions of 62 mins. Interval of time is normally dist w/ standard dev of 10 mi?
A. What is the probability that a randomly selected time between eruptions ismore than 75 minutes? B. Find the probability that the mean of a simple random sample of 7 timeintervals is more than 75. C. If we took 1500 simple random samples of n = 10 time intervals betweeneruptions from this population and the population mean is 82 minutes,about how many of the samples will result in a mean eruption time that is60 minutes or more?

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#187143

Cinnamond
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These are basic probability questions that any first year student should be able to answer.   Oddly enough they read like they came from a text book, not a real life quality problem….  Good luck.

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