Mathematics, 19.06.2020 01:57 92835304629
Eruptions of the Old Faithful geyser have duration times with a mean of 245.0 sec and a standard deviation of 36.4 sec (based on sample data). One eruption had a duration time of 110 sec. Eruptions of the Old Faithful geyser have duration times with a mean of 245.0 sec and a standard deviation of 36.4 sec (based on sample data). One eruption had a duration time of 110 sec.
a. What is the difference between a duration time of 110 sec and the mean? Answer
135
b. How many standard deviations is that (the difference found in part (a))? Answer
c. Convert the duration time of 110 sec to a z score. Answer
d. If we consider “usual” duration times to be those that convert to z scores between -2 and 2, is a duration time of 110 sec usual or unusual?
Answers: 1
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Eruptions of the Old Faithful geyser have duration times with a mean of 245.0 sec and a standard dev...
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