Question: Suppose that, when taking a random sample of three students GPAs, you get a sample mean of 3.90. This sample mean is far higher than

Suppose that, when taking a random sample of three students’ GPAs, you get a sample mean of 3.90. This sample mean is far higher than the college-wide (population) mean. Does that prove that your sample is biased? Explain. What else could have caused this high mean?

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