Expected number of sightings

Reference no: EM13102927

The number of UFO (Unidentified Flying Object) sightings per week in Roswell, NM is a random variable with the cumulative distribution function given below.

x 0 1 2 3 4 5

F(x) .10 .30 .60 .80 .90 1.0

a. Find the probability that there are two or more sightings in a particular week.

b. Find the expected number of sightings in a week.

Reference no: EM13102927

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