Suppose the distribution below represents the probability of a person to make a certain grade in Chemistry 101, where x = the letter grade of the...

Suppose the distribution below represents the probability of a person to make a certain grade in 

Chemistry 101, where x = the letter grade of the student in the class (A=4, B=3, C=2, D=1, F=0). 

2. Determine the probability that a student selected at random would make a C or higher in 

Chemistry 101. 

X 0 1 2 3 4 

P(X) 0.08 0.22 0.34 0.21 0.15