Suppose a geyser has a mean time between eruptions of 66minutes. If the interval of time between the eruptions is normallydistributed with standard deviation
24 minutes?, answer the following question.
What is the probability that a random sample of 38 timeintervals between eruptions has a mean longer than 76 ?minutes?
The probability that the mean of a random sample of 38 timeintervals is more than 76 minutes is approximately __________
?(Round to four decimal places as? needed.)
