a recent survey reported that small businesses spend 26 hours a week marketing their business. a local chamber of commerce claims that small businesses in their area are not growing because these businesses are spending less than 26 hours a week on marketing. the chamber conducts a survey of 99 small businesses within their state and finds that the average amount of time spent on marketing is 24.3 hours a week. assuming that the population standard deviation is 6.7 hours, is there sufficient evidence to support the chamber of commerce’s claim at the 0.05 level of significance?
