Statement of a problem № m40641


An electronics store sells two different brands of DVD players. The store reports that 30% of customers purchasing a DVD choose Brand 1. Of those that choose Brand 1, 20% purchase an extended warranty. Consider the chance experiment of randomly selecting a customer who purchased a DVD player at this store. a. One of the percentages given in the problem specifies an unconditional probability, and the other percentage specifies a conditional probability. Which one is the conditional probability, and how can you tell? b. Suppose that two events B and E are defined as follows: B = selected customer purchased Brand 1 E = selected customer purchased an extended warranty Use probability notation to translate the given information into two probability statements of the form P(____) = probability value.

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