Which of the following would produce a standard error of 2 points? n = 5 scores from a population with σ = 20 n = 5 scores from a population with σ = 80 n = 100 scores from a population with σ = 20 n = 100 scores from a population with σ = 40

n = 100 scores from a population with σ = 20

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean and standard deviation , the sample means with size n can be approximated to a normal distribution with mean and standard deviation, which is also called standard error, of

n = 5 scores from a population with σ = 20

n = 5 scores from a population with σ = 80

n = 100 scores from a population with σ = 20

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This one is the correct answer.

n = 100 scores from a population with σ = 40

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