Question

Health Niagara is working on its 2021 budget. According to data from the last fiscal year, 30% of people
between 60-70 years old will have at least one visit to a health provider. This proportion will be 5% for
people between 10-20 years old, and it will be 15% for kids between 5-10 years old. If we randomly
select 75 of people in the age range of 60-70, then answer the following questions:
What is the expected number of those who will visit a health provider?
a) 52.5
b) 30
c) 15.75
d) 22.5

Answer 1

Given :

75 of people in the age range of 60-70, and the proportion is 30% people between 60-70 years old

n = 75 , p = 0.30

Expected value = np

                       = 75 * 0.30

                       = 22.5

Therefore the expected number of those who will visit a health provider is 22.5