An urban planner is researching commute times in the san francisco bay area to find out if commute times have increased. in which of the following situations could the urban planner use a hypothesis test for a population mean? check all that apply. the urban planner asks a simple random sample of 110 commuters in the san francisco bay area if they believe their commute time has increased in the past year. the urban planner will compute the proportion of commuters who believe their commute time has increased in the past year.