(Continued from previous problem) Ahren and Witi both love coffee. When Ahren is in the office, he drinks one cup of coffee with probability 0.6 and no cups of coffee with probability 0.4. When Witi...

(Continued from previous problem) Ahren and Witi both love coffee. When Ahren is in the office, he drinks one cup of coffee with probability 0.6 and no cups of coffee with probability 0.4. When Witi is in the office, he drinks two cups of coffee with probability 0.5 and one cup with probability 0.5. Ahren and Witi always discard their empty coffee cups in the office wastebasket, and they are the only people to do so. Xi asserts the following:

• The number of cups of coffee that Witi drinks at the office is irrelevant to Ahren's presence at the office.

• The number of cups of coffee that Ahren drinks at the office is irrelevant to Witi's presence at the office.

• The number ofcups of coffee that Ahren drinks atthe office is irrelevant to the number ofcups of coffee that Witi drinks at the office.