Weather Forecasts? Listed below are actual high temperatures and the high temperatures forecast one day in advance (based on Data Set 11 in Appendix B). Use a 0.05 significance level to test the claim that the population of differences has a median of zero. What do the results suggest about the accuracy of the predictions? Actual high temperature 80 77 81 85 73 73 80 72

High temperature forecast one day before 78 75 81 85 76 75 79 74