One thousand researchers each take random samples of 1,000 Americans and ask their age. The sampling distribution has a standard error of 0.5 years. If the true average age of the population is 38, what percent of the researchers will get an average sample age between 36.5 and 39.5 years?
A) 38%
B) 68%
C) 95%
D) 99.7%

Question

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The Answer of One thousand researchers each take random samples of 1,000 Americans and ask their age. The sampling distribution has a standard error of 0.5 years. If the true average age of the population is 38, what percent of the researchers will get an average sample age between 36.5 and 39.5 years?
A) 38%
B) 68%
C) 95%
D) 99.7%

One Thousand Researchers Each Take Random Samples of 1,000 Americans