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based on many years of experience a lecturer in

Based on many years of experience, a lecturer in ECON241 has determined that the probability distribution function of X, the number of students absent in the Tuesday morning lecture, is as follows:

1164_Compute the expected value of X.png

1. Find the probability that on a given Tuesday either 20, 30 or 40 students will be absent.

2. Find the probability that on a given Tuesday more than 30 students will be absent.

3. Compute the expected value of X

4. Compute the variance of X

5. Compute the expected value of Y = 7X+30

6. Compute the variance of Y = 7X+30

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Microeconomics: based on many years of experience a lecturer in

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