In Constructing a 95% Interval Estimate for the Ratio of Two

Multiple Choice

In constructing a 95% interval estimate for the ratio of two population variances, $\sigma _ { 1 } ^ { 2 }$ / $\sigma _ { 2 } ^ { 2 }$ , two independent samples of sizes 41 and 61 are drawn from the populations. If the sample variances are 515 and 920, then the upper confidence limit is:

A) 0.321.
B) 1.009.
C) 0.311.
D) 0.974.