varstd

Question 1

eval

Answer 1

n choose k, p to the k, (1 minus p) to the n minus k

Question 2

E(B(n,p))

Answer 2

np

Question 3

V(B(n,p))

Answer 3

np(1-p)

Question 4

STD(B(n,p))

Answer 4

√np(1-p)

Question 5

E(Y)
E(ax+b)

Answer 5

aE(x)+b

Question 6

V(Y)
V(ax+b)

Answer 6

a^2 V(x)

Question 7

STD(Y)
STD(ax+b)

Answer 7

I a I STD I (x)