: The number of classes (X) a student takes in a given semester follows the following probability distribution: 1 2 3 4 P(X) 0.4 0.25 0.15 0.08 0.02 ??? 1. What is the probability they take 5 classes? 2. What is the probability they take at least one class? 3. What is the probability a student will take 2 or 3 classes in a semester?
: The number of classes (X) a student takes in a given semester follows the following probability distribution: 1 2 3 4 P(X) 0.4 0.25 0.15 0.08 0.02 ??? 1. What is the probability they take 5 classes? 2. What is the probability they take at least one class? 3. What is the probability a student will take 2 or 3 classes in a semester?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Answer and solve 1-4, show all work and calculator work.
Transcribed Image Text:: The number of classes (X) a student takes in a
given semester follows the following probability distribution:
1
2
3
4
5
Р(X)
0.4
0.25
0.15
0.08
0.02
???
1. What is the probability they take 5 classes?
2. What is the probability they take at least one class?
3. What is the probability a student will take 2 or 3 classes in a
semester?
4. What is the expected number of classes a student will take in
a given semester? (show your work on this one, and a screenshot
of how you worked it out on the calculator or excel).
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