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can you help me solve the problem? 3. A biology professor responds to some student questions by e-mail. The probability model below describes the number

can you help me solve the problem?
3. A biology professor responds to some student questions by e-mail. The probability model below describes the number of emails that the professor may receive from students during a day. ______ Probability a. What is the probability of 4 emails? b. How many e-mails should the professor expect to receive each day? c. Graph a histogram for this distribution on the right. -)

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