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Does the duration of an eruption have an effect on the length of time that elapses before the next eruption?
a) The histogram below shows the duration (in minutes) of those 222 eruptions. Describe this distribution.
b) Explain why it is not appropriate to find summary statistics for this distribution.
c) Let s classify the eruptions as long or short, depending upon whether or not they last at least 3 minutes. Describe what you see in the comparative boxplots.
To report their finding they want to create a 90% confidence interval. What would be the margin error for this confidence interval?
the 92 million of americans of age 50 and over control 50 percent of all discretionary income aarp bulletin march 2008.
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Millie and Senta Meter have recently taken Pre and Post test in achievement. The test were normally distributed. Millie's percentile rank changed from 57.93 to 77.34. Senta's changed from 1.07 to 4.95.
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