Type of random sampling scheme

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The serum concentration of free T3 (a thyroid hormone) among people between the ages of 30 and 60 is normally-distributed with mean 4.6 pmol/liter and standard deviation 0.5 pmol/liter.

A medical researcher plans a study where she will select a random sample of 16 people between the ages of 30 and 60, and measure their serum concentration of free T3.

If the researcher wants to be certain that half of her sample is male and half is female, what type of random sampling scheme should she use?

Reference no: EM132845354

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