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An engineering student has the following scores in Chemistry: 95, 95, 80, 70, 77, 90, 100,...

An engineering student has the following scores in Chemistry: 95, 95, 80, 70, 77, 90, 100, 90, 65, 60, 90, 100, 90, 90, 75, 95, 30, 93, 100, 60, 85, 73, 65, 75, 45, 27, 60, 60, 39, 70. Determine:
a) The frequency of each grade
b) The probability of each grade
c) The cumulative distribution of the probabilities
d) The probability of scoring a 45 or less
e) The probability of scoring a 70 or less
f) The probability of scoring a 95 or less

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