Let x be the number of courses for which a randomly selected student at a certain university is registered. The probability distribution of x appears in the table shown below.

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Author:Amos Gilat
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Let x be the number of courses for which a randomly selected student at a certain university is registered. The probability distribution of x appears in the table shown below.
x 1 2 3 4 5 6 7
p(x)
0.04 0.05 0.09 0.24 0.36 0.14 0.08
(a)
What is
P(x = 4)?
P(x = 4) =
(b)
What is
P(x ≤ 4)?
P(x ≤ 4) =
(c)
What is the probability that the selected student is taking at most five courses?
 
(d)
What is the probability that the selected student is taking at least five courses?
 
(e)
What is the probability that the selected student is taking more than five courses?

 

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What is the probability that the selected student is taking at least five courses?
 
 
What is the probability that the selected student is taking more than five courses?
 
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