Belief in UFOs A survey found that 5% of people believe that they have seen a UFO. Choose a sample of 11 people at random. Find the probability of the following. Round intermediate calculations and final answers to at least three decimal places. (a) At least 2 people believe that they have seen a UFO  P (at least 2 people believe that they have seen a UFO) =   (b) 3  or 4 people believe that they have seen a UFO       P (3 or 4 people believe that they have seen a UFO )=   (c) Exactly 3  people believe that they have seen a UFO        P (exactly 3 people believe that they have seen a UFO) =

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