AZD Electronics has determined that when one of its televisi

AZD Electronics has determined that when one of its televisions is sold, there is 0.08 chance that the set will need service before the warranty period expires. It has also assessed a 0.05 chance that a Blu-Ray player will need service prior to the expiration of the warranty.

a. Suppose a customer purchases one of the company

Solution

(a) The probability is

P(at least one of the products will require service prior to the warranty expiring)

=1-P(no one of the products will require service prior to the warranty expiring)

=1-(1-0.08)*(1-0.05)

=0.874

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(b) P(none of the four will need service prior to the warranty expiring)

=(1-0.08)^4

=0.716393

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(c) P(at least one will need repair)

=1- P(no one will need repair)

=1-0.716393

=0.283607