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Find the mean and Standard deviation of the binomial co-efficients of the expansion of (1 + x)n . Find the value for n =4.

Harish , 5 Years ago
Grade 12
anser 1 Answers
Arun

Last Activity: 5 Years ago

Dear student
for n = 4
binomial coeff = 4C0 , 4C1 , 4C2, 4C3, 4C4
 =1, 4, 6, 4, 1
hence
mean = 1+4+6+4+1 / 5 = 16/5 = 3.2
now 
Stqndard deviation= sqrt [14 – 10.24] = sqrt [3.76]

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