Answer:
[tex]\hat{\sigma}^2 = 2.8[/tex]
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 138
Average = 32.6 inch
Population variance,
[tex]\sigma^2 = 2.8[/tex]
We have to find a point estimate for the population variance of the height.
The point estimate for the population variance is the population variance itself.
[tex]\hat{\sigma}^2 = \sigma^2 = 2.8[/tex]
Thus, the point estimate of population variance is the population variance that is 2.8.
