michelle is interested in knowing how often g...
michelle is interested in knowing how often girls in her class at school use their cell phones to instant message their friends. which of the following methods could michelle use to conduct a simple random sample to answer her question? \n\na) give the survey to the first fifty girls on a list of all the students in her class. \nb) post her survey on the internet and ask only girls to respond. \nc) write the name of each girl in her class on a card and then draw 10 cards from a hat. \nd) identify which homeroom each girl in her class is in and then choosing a sample from each homeroom based on the number of girls in the homeroom.
Answer
# Brief Explanations:
A simple random sample requires that every member of the population has an equal chance of being selected. Option A is not random as it selects the first fifty girls. Option B may not be representative of her class as it's an internet - based survey. Option D is a stratified sampling method. Option C is a simple random sampling method as each girl has an equal chance of having her name drawn.
# Answer:
C. Write the name of each girl in her class on a card and then draw 10 cards from a hat.