Mainly used to estimate the population mean when population mean is not known as they have the same expected value.
Question
Mainly used to estimate the population mean when population mean is not known as they have the same expected value.
Solution
It seems like you're referring to the concept of a sample mean. When the population mean is not known, we can use a sample mean to estimate it. Here's how it works:
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Collect a sample from your population: This should be a random sample and it should be representative of the population. The size of the sample (n) can vary depending on the size of the population and the level of accuracy you need.
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Calculate the sum of
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