Two Methods for Precisely Estimating the Weights of Very Large

question 3

Multiple Choice

Two methods for precisely estimating the weights of very large objects are being evaluated for consistency.From 9 measurements using method 1, there is a variance of 1.023; from 14 measurements using method 2, there is a variance of 0.095.Does method 1 appear to have more variability than method 2? Select the appropriate critical value (CV) , test statistic (TS) , and decision and state the null hypothesis.(Use α = 0.05) .

• A) CV = 5.049; TS = 10.7684; reject H₀: The difference between methods is not statistically significant.
• B) CV = 6.287; TS = 115.9589; reject H₀: The difference between methods is not statistically significant.
• C) CV = 5.049; TS = 10.7684; fail to reject H₀: The difference between methods is statistically significant.
• D) CV = -6.287; TS = 115.9589; reject H₀: The difference between methods is statistically significant.

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