Question: Fabric Flammability Tests in Different Laboratories Flammability tests were conducted on childrens sleepwear. The Vertical Semirestrained Test was used, in which pieces of fabric were

Fabric Flammability Tests in Different Laboratories Flammability tests were conducted on children’s sleepwear. The Vertical Semirestrained Test was used, in which pieces of fabric were burned under controlled conditions. After the burning stopped, the length of the charred portion was measured and recorded. The same fabric samples were tested at five different laboratories. The data are from Minitab, and the analysis of variance results from Minitab are shown below. Using a 0.05 significance level, test the claim that the five laboratories produce the same mean test scores.

Minitab

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