Question

suppose a geyser has a mean time between 66 minutes. If the interval of the time between the eruptions is normally distributed with standard deviation 16 minutes. what is the probability that a randomly selected time interval between eruptions is longer than 74 minutes?

What is the probability that a random sample of 10 time intervals between eruptions has a mean longer than 74 minutes? What is the probability that a random sample of 16 time intervals between eruptions has a mean longer than 74? what effect does increasing the sample size have on the probability. Chose from A,B, C or D a) the probability decreases bc the variability in the sample mean decreases as the sample size increases b) probability increases bc the variability in the sample mean increases as sample size increases. c) probability decreases bc the variability in the sample mean increases as the sample size increases. d) probability increases bc the variability in the sample mean decreases as the sample size increases What you might conclude if a random sample of 16 time intervals between eruptions has a mean longer than 74 minutes.

Answer 1