For each of the two populations the populations mean 20 and


For each of the two populations, the populations mean= 20 and population standard deviation= 6. A random sample size of 20 is drawn from population A, and a random sample size of 40 is dranw from population B. Which sample man is probably a better estimate of its population mean? Why?

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Other Subject: For each of the two populations the populations mean 20 and
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