Question

Bruce is going to call one person from his contacts at random. He has 25 total contacts. 20 of those contacts are from his neighborhood.What is P(call a person not from his neighborhood)?If necessary, round your answer to 2 decimal places

Answer 1

Answer:

P(call a person not from his neighborhood) = 0.2

Explanation:

If 20 of his contacts are from his neighborhood, then 5 of his contacts are not from his neighborhood because:

25 - 20 = 5

Where 25 is the total number of contacts.

Then, the probability to call a person not from his neighborhood can be calculated as:

P = 5/25 = 0.2

Because he has 25 contacts and 5 of them are not from his neighborhood.