A sociologist studying freshmen at a major university carried out a survey, asking, among other questions, how often students went out per week, how many hours they studied per day, and how many hours they slept at night. The sociologist used an introductory sociology class to carry out the survey. The sociologist has learned from previous studies that females and males often behave differently regarding study and sleep patterns. She decides that she needs to ensure adequate numbers of females and males. She should take: a stratified random sample. two convenience samples, one of females and one of males. a multigroup sample. a multistage sample..

1. A sociologist studying freshmen at a major university carried out a survey, asking, among other
questions, how often students went out per week, how many hours they studied per day, and how
many hours they slept at night. The sociologist used an introductory sociology class to carry out
the survey. The sociologist has learned from previous studies that females and males often
behave differently regarding study and sleep patterns. She decides that she needs to ensure
adequate numbers of females and males. She should take: a stratified random sample. two
convenience samples, one of females and one of males. a multigroup sample. a multistage
sample.