Question
Download Solution PDFA random variable X is binomially distributed with parameter n = 25 and p = 0.2. The skewness of the variable X is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven
n = 25
p = 0.2
q = 1 – p = 0.8
Formula
The skewness of binomial distribution is β1
β1 = (q – p)/√(n × p × q)
p = probability of success event
q = probability of failure event
Calculation
β1 = (0.8 – 0.2)/√(25 × 0.8 × 0.2)
⇒ 0.6/√(40
∴ The skewness of variable X is 0.3
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