Question

HELPPPPPPP

The following confidence interval is obtained for a population variance, σ2
: (204, 308).

Use these confidence interval limits to find the point estimate for σ2
.

ANSWER CHOICES

A.52


B.512


C.256


D.104

Answer 1

Explanation:

The point estimate for the population variance, σ^2, would be the midpoint of the confidence interval.

Midpoint = (lower limit + upper limit)/2

= (204 + 308)/2

= 256

Therefore, the point estimate for σ^2 is 256.

Answer: C. 256