8.2 A study on breeding birds collects information such as the length of their eggs (in mm). Assume that the length is normally distributed with = 42.1 mm and o2 = 20.82. What is the probability of (a) finding an egg with a length greater than 50 mm? (b) finding an egg between 30 and 40 mm in length? Calculate the results both manually and by using R.

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