Sign Test for Freshman 15 The table belowlists some of the weights (kg) from Data Set 6 “Freshman 15” in Appendix B. Those weights were measured from coüege students in September and later in April of...

Sign Test for Freshman 15 The table belowlists some of the weights (kg) from Data Set 6 “Freshman 15” in Appendix B. Those weights were measured from coüege students in September and later in April of their freshman year. Assume that we plan to use the sign test to test the claim of no difference between September weights and April weights. What requirements must be satisfied for this test? Is there any requirement that the populations must have a normal distribution or any other specific distribution? In what sense is this sign test a “distribution-free test”?

Extracted text: September weight (kg) 67 53 64 74 67 70 55 74 62 57 April weight (kg) 66 52 68 77 67 71 60 82 65 58