The following observations 14, 19, 17, 20, 25 constitute a random sample from an unknown population with mean μ and standard deviation σ. The point estimation of population mean is:
1
17
2
20
3
19
4
18
The following observations 14, 19, 17, 20, 25 constitute a random sample from an unknown population with mean μ and standard deviation σ. The point estimation of population mean is: