a discrete random variable x has mean equal to 6 and variance equal to 2. if it is assumed that the underlying distribution x is binomial,what is the probability that 5<=x<=7?
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Answer:
probability will be 1/2 of it
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Mean = np = 6
Variance = npq = 2
With the help of above
we get, n= 9 , p= 2/3 , q = 1/3
We have to find
P(5) +P(6) + P(7)
Variance = npq = 2
With the help of above
we get, n= 9 , p= 2/3 , q = 1/3
We have to find
P(5) +P(6) + P(7)
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