5 Let X denote the number of Canon SLR cameras sold during a

Last updated: 10/19/2023

5 Let X denote the number of Canon SLR cameras sold during a particular week by a certain store The pmf of X is 0 1 1 2 2 Px x 25 15 Sixty percent of all customers who purchase these cameras also buy an extended warranty Let Y denote the number of purchasers during this week who buy an extended warranty 3 3 4 a What is P X 4 Y 2 Hint This probability equals P Y 2 X 4 P X 4 now think of the four purchases as four trials of a binomial experiment with success on a trial corresponding to buying an extended warranty Calculate P X Y b c Determine the joint pmf of X and Y and then the marginal pmf of Y