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 \text{P(call a person not from his neighborhood})P(call a person not from his neighborhood)P, left parenthesis, c, a, l, l, space, a, space, p, e, r, s, o, n, space, n, o, t, space, f, r, o, m, space, h, i, s, space, n, e, i, g, h, b, o, r, h, o, o, d, right parenthesis?
If necessary, round your answer to 2 decimal places.

Answer 1

Answer:

Step-by-step explanation:

P(from neighbourhood)= 20/25= 4/5

P(not from neighbourhood) 5/25= 1/5

Answer 2

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 neighbourhood. What is P(call a person not from his neighbourhood). If necessary, round your answer to 2 decimal places.

Given:

Total number of contacts = 25

Total number of contacts that are from his neighbourhood = 20

To Find:

Find the probability of calling one person not from his neighbourhood

Solution:

Find the number of contacts not from his neighbourhood

Total contact = 25

Total from his neighbourhood = 20

Total not from his neighbourhood = 25 - 20

Total not from his neighbourhood = 5

Find the probability of calling one person not from his neighbourhood:

Total contact = 25

Total not from his neighbourhood = 5

P(call a person not from his neighbourhood) = 5/25

P(call a person not from his neighbourhood) = 1/5 or 0.2

Answer: The probability is 0.2