The article “Reducing Uncertainty of Design Floods of Two-Component Mixture Distributions by Utilizing Flood Timescale to Classify Flood Types in Seasonally Snow Covered Region” (J. Hydrol. 2019: 588–608) reports the accompanying data on annual precipitation (mm/yr) at 34 watersheds in Norway.

a. Construct a normal probability plot. Is normality plausible?
b. Construct a Weibull probability plot. Is the Weibull distribution family plausible?

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