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The ratio of tall: to dwarf plants is 13:3 (tall is dominant). If 9 plants are randomly chosen, what is the probability that: a) 8

The ratio of tall: to dwarf plants is 13:3 (tall is dominant). If 9 plants are randomly chosen, what is the probability that:

a) 8 are tall and 1 is a dwarf plant?

b) Are all 9 the same height?

c) 1 or more dwarf plants?

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