The probability distribution function of a discrete random varisble x which represents the mmber of courses a stodent in a class has failed in is given as follows 2. 0.1 3. 007 4. 0.03 P(X) 0.8 1) The expected value (The mean) is: A. 1.33 B.1 C.0.8 D. 231 2) The probability that a student has failed in at least three courses is A. 0.07 B. 0.01 C.0.1 D. 0.97

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The probability distribution function of a discrete random variable x whích represents the
mumber of courses a student in a class has failed in is given as followrs
2
0.1
4.
P(X)
0.8
007
0.03
1) The expected value (The mean) is:
A. 1.33
B.1
C.0.8
D. 231
2) The probability that a stadent has failed in at least three courses is:
A. 0.07
B. 0.01
C.0.1
D. 0.97
Answers A
Transcribed Image Text:The probability distribution function of a discrete random variable x whích represents the mumber of courses a student in a class has failed in is given as followrs 2 0.1 4. P(X) 0.8 007 0.03 1) The expected value (The mean) is: A. 1.33 B.1 C.0.8 D. 231 2) The probability that a stadent has failed in at least three courses is: A. 0.07 B. 0.01 C.0.1 D. 0.97 Answers A
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