Question

Forty two percent of the people that use the internet order something online. Find the probability that only six of 10 users will order something online.

Answer 1

Solution

Given that ,

p = 0.42

1 - p = 0.58

n = 10

Using binomial probability formula ,

P(X = x) = (_n C _x) * p^x * (1 - p)^{n - x}

P(X = 6) = (₁₀ C ₆) * 0.10³ * (0.90)⁵

= 0.1304

Probability = 0.1304