Two processes for manufacturing large roller bearings are under study. In both cases, the diameters (in centimeters) are being examined. A random sample of 21 roller bearings from the old manufacturing process showed the sample variance of diameters to be s2 = 0.213. Another random sample of 26 roller bearings from the new manufacturing process showed the sample variance of their diameters to be s2 = 0.14. Use a 5% level of significance to test the claim that there is a difference (either way) in the population variances between the old and new manufacturing processes.Classify the problem as being a Chi-square test of independence or homogeneity, Chi-square goodness-of-fit, Chi-square for testing or estimating σ2 or σ, F test for two variances, One-way ANOVA, or Two-way ANOVA, then perform the following. (ii) Find the sample test statistic. (Round your answer to two decimal places.)
Two processes for manufacturing large roller bearings are under study. In both cases, the diameters (in centimeters) are being examined. A random sample of 21 roller bearings from the old manufacturing process showed the sample variance of diameters to be
Another random sample of 26 roller bearings from the new manufacturing process showed the sample variance of their diameters to be
Use a 5% level of significance to test the claim that there is a difference (either way) in the population variances between the old and new manufacturing processes.
Classify the problem as being a Chi-square test of independence or homogeneity, Chi-square goodness-of-fit, Chi-square for testing or estimating σ2 or σ, F test for two variances, One-way ANOVA, or Two-way ANOVA, then perform the following.
(ii) Find the sample test statistic. (Round your answer to two decimal places.)
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 8 images
