Listed below are actual high temperatures and the high temperatures that were forecast five days earlier. use a .05 significance level to test the claim of a mean difference between the actual high temperatures and the high temperatures that were forecast one day earlier. use our 4 step procedure for this paired difference (matched pairs) (pre-test, post-test) study. actual high: 80 77 81 85 73 high forecast one day earlier: 85 75 81 85 90