Homework: Section 8.1 Homework Part 1 of 5 Points: 0.57 of 1 Suppose a geyser has a mean time between eruptions of 69 minutes. Let the interval of time between the eruptions be normally distributed with standard deviation 23 minutes. Complete parts (a) through (e) below. (a) What is the probability that a randomly selected time interval between eruptions is longer than 80 minutes? The probability that a randomly selected time interval is longer than 80 minutes is approximately (Round to four decimal places as needed.)