Answer: P(X = 0) = 1 16 , P(X = 1) = 4 16 , P(X = 2) = 6 16 , P(X = 3) = 4 16 , P(X = 4) = 1 16 (1) Notice that the denominators of the five fractions are the same and the numerators of the five fractions are 1, 4, 6, 4, 1. The numbers in the numerators is a set of binomial coefficients. 1 16 = 4 0 1 16, 4 16 = 4 1 1 16, 6 16 = 4 2 1 16, 4 16 = 4 3 1 16, 1 16 = 4 4 1 16 We can then write the probability mass function as Reply
Answer:
P(X = 0) = 1
16 , P(X = 1) = 4
16 , P(X = 2) = 6
16 , P(X = 3) = 4
16 , P(X = 4) = 1
16 (1)
Notice that the denominators of the five fractions are the same and the numerators of the five
fractions are 1, 4, 6, 4, 1. The numbers in the numerators is a set of binomial coefficients.
1
16 =
4
0
1
16, 4
16 =
4
1
1
16, 6
16 =
4
2
1
16, 4
16 =
4
3
1
16, 1
16 =
4
4
1
16
We can then write the probability mass function as