(c) The covariance, Cov(X,Y) =__(J)__.

(b) An intruder has a 5% chance of not activating the device located in the President's office.Campus police has obtained information about a student prank in preparation and, as a result, estimates that there is a 20% chance that an intruder will visit the President's office during next Columbus Day weekend. If this device is activated during that weekend, what is the probability that there is an intruder in the President's office? Answer=__(L)__

題組內容

(c) The covariance, Cov(X,Y) =(J).

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