The dataset "textmessages.rds" contains variables measured from a survey conducted of Harvard students enrolled in a recent Statistics class: female: an indicator variable which is 1 for females and 0 for males; underclassman: an indicator variable which takes on the value 1 for a freshman or a sophomore, or 0 for a junior, senior, or a grad student; and texts: a variable that measures the number of text messages the respondent says he or she sends in a typical day.

An investigator wants to know whether male or female students send more text messages (H1: )

Perform an appropriate t-test to address the investigator's scientific question (without doing any transformations). What is the value of test-statistic?