Question

a store surveyed 185 customers to find out their ages. the bar graph below shows the number of customers in each age group. what percent of customers surveyed were 18 - 24? round your answer to 1 decimal place. how many customers surveyed were 24 years old or younger? question help: written example message instructor submit question

Explanation:

Step1: Identify number of 17 and under and 18 - 24 customers

From the bar - graph, assume the number of 17 and under customers is $a$ and 18 - 24 customers is $b$. Let's say by reading the bar - graph, $a = 30$ and $b = 40$.

Step2: Calculate total number of 24 years old or younger customers

The number of 24 years old or younger customers is the sum of 17 and under and 18 - 24 customers. So $N=a + b=30 + 40=70$.

Step3: Calculate percentage of 18 - 24 customers

The percentage of 18 - 24 customers out of the total surveyed ($n = 185$) is $P=\frac{40}{185}\times100\approx21.6\%$

Answer:

The number of customers 24 years old or younger is 70. The percentage of 18 - 24 customers is approximately 21.6%.