Question

Two thousand randomly selected adults were asked whether or not they have ever shopped on the Internet. The following table gives a two-way classification of the responses.
a. If one adult is selected at random from these 2000 adults, find the probability that this adult
i. Has never shopped on the Internet
ii. Is a male
iii. Has shopped on the Internet given that this adult is a female
iv. Is a male given that this adult has never shopped on the Internet
b. Are the events “male” and “female” mutually exclusive? What about the events “have shopped” and “male?” Why or why not?
c. Are the events “female” and “have shopped” independent? Why or why not?


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  • CreatedAugust 25, 2015
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