Mathematics, 07.03.2020 05:12 saneayahsimmons
A distribution of grades in a course where A=4, B=3, etc.
X=0, 1, 2, 3, 4
P(X)=0.1, 0.17, 0.21, 0.32, 0.2
a. Find the probability that a student has passed this class with at least a C (at least a 2)
b. Find the probability that a student has an A (4) given that he has passed the class with at least a C (2).
c. Find the expected grade in this class
d. Find the variance and standard deviation for the class grades.
e. Suppose a student knows they passed the course with a C, what should they expect their grade to be?
Answers: 3
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A distribution of grades in a course where A=4, B=3, etc.
X=0, 1, 2, 3, 4
P(...
X=0, 1, 2, 3, 4
P(...
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