Data from Ivy Tech's advising center shows the wait times as a normal distribution with the average as 20 min and a standard dev iation as 5 min. Using the empirical rule, what percent of students wait between 15 and 25 minutes?
1 answer:
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Answer:
68%
Step-by-step explanation:
According to the empirical rule, 68% of the distribution lies within 1 standard deviation of the mean.
Here, the mean is 20 and the standard deviation is 5. The bounds on 1 standard deviation from the mean are 20±5 = [15, 25]. This is precisely the interval of interest.
68% of students wait between 15 and 25 minutes
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