Collinsville Construction Company purchases steel rods for its projects.Based on previous tests, Claude Carter, Quality Assurance Manager, has recommended not purchasing rods from Redding Rods, Inc.(population 1), and switching to Stockton Steel (population 2), since Stockton's rods had less variability in length.Claude has sampled the outputs from Redding's and Stockton's rod manufacturing processes.The results for Redding were s₁²= 0.15 with n₁ = 8, and, for Stockton, the results were s₂² = 0.04 with n₂ = 10.Assume that rod lengths are normally distributed in the population If $\alpha$= 0.05, the observed F value is ___________.

Question

Quizplus · Accepted Answer

The observed F value is calculated by dividing the variance of the first population by the variance of the second population. Given that the sample variances (s^2) for Redding and Stockton are 0.15 and 0.04 respectively, the observed F value is 0.15 / 0.04 = 3.75.

Collinsville Construction Company Purchases Steel Rods for Its Projects α\alphaα = 005, the Observed F Value Is ___________

Collinsville Construction Company Purchases Steel Rods for Its Projects $\alpha$ = 005, the Observed F Value Is ___________