Draw a tree diagram for Type B seed, giving the probabilities for each branch.  ii) Calculate the probability that type B seed grows whatever the rainfall.

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6. Type B seed is tested in the same country and the probability of good rainfall
is again 0.4. Type B seed is found to have a probability of growing of 0.8
when the rainfall is good, and of 0.5 when it is poor.
i) Draw a tree diagram for Type B seed, giving the probabilities for each
branch. 

ii) Calculate the probability that type B seed grows whatever the rainfall. 

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