Question: Listed below are the time intervals (in minutes) before and after eruptions of the Old Faithful geyser. Find the values of d and s d

Listed below are the time intervals (in minutes) before and after eruptions of the Old Faithful geyser. Find the values of d and s_d. In general, what does ?_d represent?

Time interval before eruption Time interval after eruption 98 92 95 87 96 92 95 92 100 90

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