Measure the effectiveness of teaching skills

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A statistics instructor wants to measure the effectiveness of his teaching skills in a class of 72 students (N = 72). He selects students by waiting at the door to the classroom prior to his lecture and pulling aside every third student to give him or her a questionnaire.

(a) Is this sample design an example of random sampling? Explain.

(b) Assuming that all students attend his class that day, how many students will he select to complete the questionnaire?

Reference no: EM132854339

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