You have been asked to do a survey of classmates in your high school and you nee

Question

You have been asked to do a survey of classmates in your high school and you need to draw a simple random sample. You plan to draw a sample of 60 students.

Which of the following procedures will give you a simple random sample?

A) You assume that students have been randomly placed in classes, so you choose three classes by random selection and place all of those students in your sample.   

B) You have a list with the names of all the students on it. You choose one out of the first 10 names at random. Then you choose every nth student name on the list until you have 60 students for your sample.   

C) Choose the first 60 students that pass through the front door at the beginning of school in the morning.

D) Put the name of each classmate in school on a piece of paper and place the pieces of paper in a cardboard box. Next randomly select 60 pieces of paper from the box.

E) You randomly choose 10 students from each of the six advanced physics classes.  

Explanation / Answer

To get a simple random sample, put the name of each classmate in school on a piece of paper and place the pieces of paper in a cardboard box. Next randomly select 60 pieces of paper from the box.

Option D is correct.

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