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Can I have some help A professor discovers that the likelihood of a student skipping 2 classes is three times the likelihood of skipping 4

Can I have some help

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A professor discovers that the likelihood of a student skipping 2 classes is three times the likelihood of skipping 4 classes. If the number of classes skipped follows a Poisson distribution, what is the variance of the number of classes skipped. None of the above

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