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Can you please help me with this HW question?

Can you please help me with this HW question?

Financial analyst Larry Potts needs a sample of 100 securities listed on either the New York Stock Exchange (NYSE) or the American Stock Exchange (AMEX). According to the Wall Street Journal's "Stock Market Data Bank," 2,531 NYSE securities and 746 AMEX securities were traded on the previous business day. Larry directs his staff to randomly select 77 NYSE and 23 AMEX securities. His sample is a:

Question 9 options:


disproportionate systematic sample


disproportionate stratified sample


proportionate stratified sample


proportionate systematic sample


proportionate cluster sampling

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