A number of minor automobile accidents occur at various high-risk intersections despite traffic lights. The traffic department claims that a modification in the type of light will reduce these accidents. The traffic commissioners have agreed to a proposed experiment. Eight intersections were chosen at random, and the lights at those intersections were modified. The numbers of minor accidents during a six-month period before and after the modifications were as follows: Number of Accidents Before modification m in After modification J At the 0.05 significance level, is it reasonable to conclude that the modification reduced the number of traffic accidents? a. State the decision rule. (Negative answer should be indicated by a minus sign. Show 3 decimal places.) Reject Ho if t