Question

A sample of 100 items has a population standard deviation LaTeX: \:\sigma\:\:σof 5.1 and a sample mean of 21.6. What is the value of the point estimate for the population mean?

Answer 1

The point estimate of population mean is 21.6.

Explanation:

A point estimate is a numerical value that is used to estimate the value of the parameter under study.

The point estimate is calculated using the sample values.

For example, sample (
`\bar x`) is the point estimate of population mean (μ), sample standard deviation (s) is the point estimate of population standard deviation (σ), sample proportion (
`\hat p`) is the point estimate of population proportion (p).

It is provided that the sample mean of 100 items is,

`\bar x=21.6`

Then the point estimate of population mean is:

`\mu=\bar x=21.6`

Thus, the point estimate of population mean is 21.6.