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A full time 1st year student at university takes 4 units per semester. The probability distribution function for the number of units in which you will achieve a grade of distinction (D) is :
x = number of grades at D | 0 | 1 | 2 | 3 | 4 |
P(X = x) | 0.10 | 0.39 | 0.31 | 0.15 | 0.05 |
What is the probability that such a student gets at LEAST 2 distinctions?
State your answer to two(2) decimal places only.
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