7.  Refer to the following boxplot to answer the items that follow:     a.  Estimate the 5-number-summary for the wait times between eruptions for Old Faithful?  Be as reasonable in this estimate as possible.             b.  A data point for data set is X = 6.  In what quartile would we find this data point?             c.  What is the interquartile range (IQR) for this data?             d.  What percent of the distribution fall between X = 4 and X = 8?

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