A property developer proposed to construct a new shopping centre in an environmentally sensitive area. It was believed 80% of residents in the community were opposed to the development. The developer therefore decided to undertake an extensive advertising campaign in order to try to get popular support for the project. The campaign focused heavily on promoting the many community benefits the shopping centre would deliver. After a period of time, another survey was conducted by randomly selecting a sample of 125 residents, with 70% of residents indicating they supported the construction of the shopping centre. Is there sufficient evidence to conclude the proportion of residents opposed to the construction of the shopping centre decreased? Use a 1% level of significance.