A manufacturer of game controllers is concerned that its controller may be difficult for left-handed users. They set out to find lefties to test. About 13% of the population is left-handed. If they select a sample of 7 customers at random in their stores, what is the probability of each of the outcomes described in parts a through f below?

1. There are exactly 3 lefties in the group.

2. There are at least 3 lefties in the group.

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