The likelihood that someone who logs onto a particular site in a "shopping mall" on the Internet will purchase an item is 0.05 and follows the binomial distribution.If the site has 35 people accessing it in the next hour,what is the expected number of successes during this hour?
A) 1.75
B) 2.5
C) 0.05
D) 12
E) 35

Question

Quizplus · Accepted Answer

The expected number of successes in a binomial distribution is given by $n \times p$, where $n$ is the number of trials and $p$ is the probability of success on each trial. Here, $n = 35$ and $p = 0.05$, so the expected number of successes is $35 \times 0.05 = 1.75$.

The Likelihood That Someone Who Logs onto a Particular Site