Question

The following data is about the consumers who purchased digital cameras and laptop computers from Amazon with warranty or without warranty:

	Purchased Warranty?
	Yes	No
Digital Camera	36	48
Laptop Computer	150	220

what is the probability that a consumer purchases a digital camera and an extended warranty?

Given the same contingency table above, what is the probability that a consumer purchases an extended warranty given that he/she has purchased a digital camera.

Answer 1

The table is provided as:

	Purchased Warranty?
	Yes	No	Total
Digital Camera	36	48	84
Laptop Computer	150	220	370
Total	186	268	454

P(consumer purchases a digital camera and an extended warranty)

P(Consumer purchases an extended warranty / she has purchased a digital camera)

= P(Consumer purchases an extended warranty and she has purchased a digital camera) / P(she has purchased a digital camera)

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