Aresearcher is interested in the texting habits of high school students in the united states. the researcher selectsa group of 100 students, measures the number of text messages that each individual sends each day, and calculates the average number for the group. identify the population in this study o the entire set of high school students in the united states the entire set of text messages sent by high school students in the united states o the entire set of text messages sent by the 100 students who were measured in the study the 100 students who were measured in the study identify the sample in this study. o the entire set of high school students in the united states the entire set of text messages sent by high school students in the united states the entire set of text messages sent by the 100 students who were measured in the study o the 100 students who were measured in the study the average number that the researcher calculated is an example of a