8. Bonus question: (10 points) A final exam consists on several questions including 11 bonus question....

 

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8. Bonus question: (10 points) A final exam consists on several questions including 11 bonus question. Suppose without the bonus, the scores on a final exam are normally distributed with mean 60 and variance 100. Suppose that all students attempt the bonus question and that all scores improve by 5 points, up to a maximum of 100 points. Let the score without the bonus points be X and the score with the bonus points be B. Calculate E(B): First express B as a function of X, and try to write an expression in terms of the density of X for E(B). Then evaluate. 8. Bonus question: (10 points) A final exam consists on several questions including 11 bonus question. Suppose without the bonus, the scores on a final exam are normally distributed with mean 60 and variance 100. Suppose that all students attempt the bonus question and that all scores improve by 5 points, up to a maximum of 100 points. Let the score without the bonus points be X and the score with the bonus points be B. Calculate E(B): First express B as a function of X, and try to write an expression in terms of the density of X for E(B). Then evaluate.

Answer rating: 100% (QA)

Score after bonus is 5 more than score ... View the full answer