Question: Students are asked to write a call word essay without using spell checking . The number of misspelled words , which is represented as the

Students are asked to write a call word essay without using spell checking . The number of misspelled words , which is represented as the random variable I has the following probability distribution :" Value of * :` 1 2 4\\ Probability : 1.1 1.2 1 . 3 1 . 3 1. 1 a . Write the event, " at least 2 misspelled words " in terms of the random variable *. What is the probability of this event ?" b . Calculate the expected value and the variance of*

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