Appendix B Data Sets. In Exercises 13–16, refer to the indicated data set in Appendix B and use the sign test for the claim about the median of a population. Old Faithful Refer to Data Set 23 “Old...

Appendix B Data Sets. In Exercises 13–16, refer to the indicated data set in Appendix B and use the sign test for the claim about the median of a population.

Old Faithful 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.