SOLUTION: A class of 50 students obtained the following grades in a statistics course: A 5 B 25 C 15 D 5 If one student is selected at random, what is the probability that a. the student

Question 1117177: A class of 50 students obtained the following grades in a statistics course:
A 5 B 25 C 15 D 5
If one student is selected at random, what is the probability that
a. the student obtained a B?
b. the student obtained either a B or a C?
c. the student did not obtain a D?
d. the student did not obtain either a B or a C?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Obtained a B is 25/50 or 1/2
B or C is 40/50 or 4/5
No D means 1-(5/50) or 45/50, 9/10
Not a B or C means 1-(4/5) or 1/5
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