To sum up, the conclusion lacks credibility because the evidence cited in the analysis does not lend strong support to what the arguer maintains. To strengthen the argument the arguer would have to provide more evidence concerning the percentage of the affected families and their geographical distribution. To better evaluate the argument, we would need more information regarding the electric expense relevant to the actual amount of time for cooling among, respectively, the three groups of households and the amount of electricity used for other purposes in all three groups of families under survey.