I only need part C Q4 30 points each with 10 points Suppose

I only need part C

Q4: (30 points, each with 10 points) Suppose that the likelihood that someone who logs onto a particular site in a shopping mall on the World Wide Web will purchase an item is 0.20. c) If 1,000 people visit this site in one week, what would be the average number of items purchased by these 1,000 people? Assume that if people purchase an item they purchase one item. Note: Suppose we define X = number of items purchased by 1,000 people. Then X has a binomial distribution with n= 1,000 and p=probability that an individual will purchase an item.

Solution

C)

well as you can see the problem say that X has a binomial distribution

to find the average number of items purchase by these 1,000 people we just need multiply the number of people by the probability that an individual will purchase an item

miu = n*p = 1,000 * 0.20 =200

the answer is 200 that is the average number of items purchased