Question: Refer to Data Set 23 ?Old Faithful? in Appendix B for the time intervals before eruptions of the Old Faithful geyser. Use a 0.05 significance

Refer to Data Set 23 ?Old Faithful? in Appendix B for the time intervals before eruptions of the Old Faithful geyser. Use a 0.05 significance level to test the claim that those times are from a population with a median of 90 minutes.

Data set 23

INT BEFORE (MIN) 82 99 DURATION (SEC) 251 243 250 INT AFTER

INT BEFORE (MIN) 82 99 DURATION (SEC) 251 243 250 INT AFTER (MIN) HEIGHT (FT) PRED ERROR (MIN) TIT 83 76 86 130 125 -13 88 120 -2 240 82 120 -6 92 86 243 87 130

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