Question: Mobile telephones perform handoffs as they move from cell to cell. During a call, a telephone either performs zero handoffs (H0), one handoff (H1), or

Mobile telephones perform handoffs as they move from cell to cell. During a call, a telephone either performs zero handoffs (H0), one handoff (H1), or more than one handoff (H2). In addition, each call is either long (L), if it lasts more than three minutes, or brief (B). The following table describes the probabilities of the possible types of calls.

(a) What is the probability that a brief call will have no handoffs?
(b) What is the probability that a call with one handoff will be long?
(c) What is the probability that a long call will have one or more handoffs?

Ho H1 H2 10.1 0.1 0.2 Bl 0.4 0.1 0.1

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