Answer: 2.04
Step-by-step explanation:
We know that if population variance[tex](\sigma^2)[/tex] the sample variance [tex](s^2)[/tex] is the best point -estimate for the the population variance[tex](\sigma^2)[/tex].
Given : In a sample of oil filters , their diameters are measured and found to have a variance of 2.04.
i.e. Sample variance : [tex]s^2=2.04[/tex]
Then, a point estimate for the population variance in diameters of oil filters.[tex](\sigma^2)[/tex] = 2.04
Hence, the a point estimate for the population variance in diameters of oil filters= 2.04
