I need help with this

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?

The weather forecaster says that there is a 51% chance of rain today. which statement describes the likelihood that it will rain today?