The final letter grades earned by students in a large psychology class were converted to grade points in order to calculate the students’ GPAs. An A = 4 points, a B = 3 points, etc. Let the random variable X = the grade point earned by a randomly selected student. The probability distribution of X is given in the table.
The probability that a randomly selected student earned a grade point of is .:3 or 4
The probability that a randomly selected student earned a grade point of is .:0.754