Case is a car assessor shop provides the car windows tinting. The shop ordered three different types of film from a manufacturer. According to the manufacturer, the dyed window tint film is the most economical film that blocks the UV rays to some extent. The metalized window film has a better UV-blocking effect compared to the first one. The ceramic tinted film is most effective in blocking UV rays. To ensure this information is true, Case randomly selected three cars with tinted windows for each type of film in conducting a test on the UV-blocking strength. The outcome is recorded in the following table. Conduct an appropriate test to justify the manufacturer’s claim.

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Source of Variation Between groups Within groups Total Sum of Squares 86,050 10,254 96,304 Degrees of Freedom 2 6 8